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How to: Power To Accessory Circuit After Key Off       #: 193
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 Posted: Sat Nov 18th, 2017 01:15 am
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mhoward
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How To: Power To Accessory Circuit After Key Off

All credit for this mod goes to Bob Wenzing (rwenzing).  Many thanks to Bob for his creativity, expertise and willingness to share his knowledge to help others mod their vehicles!
I found this information in an old thread and noticed that the diagram Bob referred to was missing.  I contacted him and he graciously emailed the missing diagram to me… 12 years after his original posting!  Bob, you are awesome!



######################################
# Original Post
######################################


Note: This is an unauthorized mod that I did to my 2003 Ranger for my own reasons. I present it here for informational purposes only. If you choose to do something similar, you do so at your own risk.


This is a simple mod that will provide power to the accessory circuit (including radio, power windows & wipers / washers) after the ignition switch has been turned off. The accessory circuit will remain powered until the driver's door is opened. As pictured below, it should work on 2001~2003 Rangers and possibly earlier years as well. The 2004+ Ranger is a different beast electrically and this will not work as written for 2004-on.
It requires 2 standard Bosch pattern SPDT relays which are available at the Ford dealer for about $7 each - a good one to use is a replacement for a Ranger's heater blower motor relay. It is easy to connect wires to the relay pins using quality 1/4" insulated spade terminals or special relay sockets.
All wires are readily accessible in the radio cavity with the radio removed. It may make things easier if the radio bezel is also removed.
NOTES:
***There are two yellow/black's in the drawing: one to the GEM and one to the HU. They have different functions and must not be interchanged nor connected together.
***The GEM module has two connectors. The yellow/black (yellow wire with a black stripe) to be tapped for the door open signal is in the connector closest to the front of the truck. CAUTION: There is also a black/yellow (black wire with a yellow stripe) in the same connector - be careful not to mix them up.
***I used 16 gauge wire throughout to match the truck wiring. The spade connectors and wire taps used should also match the 16 gauge wire.
***Pin 30 of the relay on the right side of the diagram should be tapped to the Black/Light Green wire of the dash harness going to the head unit. There are two of these Black/Light Green wires and the larger one should be used.



######################################
# My Version
######################################


Here is how I did mine, using a pre-made dual relay connector and relays from Parts Express (http://www.parts-express.com)
Parts needed:
1)  330-078          12 VDC Bosch Type Dual Relay Socket for Door Lock/Unlock Circuits
2)  330-073          12 VDC Automotive 5-Pin Relay SPDT 30/40A Bosch Type
4) ------------          wire taps
 
These relays have a mounting tab molded onto the housing, making it an easy mount.  I used the same relays and connector on my autolamps mod and they have performed flawlessly for over two years as of this writing (11/2017).











I then labeled the relays A and B and created the following chart for reference.

Relay A                 Wire                      Destination of Wire
Pin                        Color
 
30                           Blue                       To Relay B Pin 86 AND GN/PU on audio head unit
85                           White                    To Relay B Pin 87A
86                           Black                      To YW/BK on audio head unit
87                           Yellow                   To YW/BK on audio head unit
87A                         Red                        Not Used
------------------------------------------------------------------------------------------------------------------
Relay B                 Wire                      Destination of Wire
Pin                        Color
 
30                           Blue                       To LARGE BK/LG on audio head unit
85                           White                    To YW/BK on GEM
86                           Black                      To Relay A Pin 30 AND GN/PU on audio head unit
87                           Yellow                   Not Used
87A                         Red                        To Relay A Pin 85



I then followed the diagram and tapped the appropriate wires together, soldering and shrink tubing the connections.  On the wires for the unused poles, I simply cut the wires off short, bent them over and shrink tubed them.



Into the dashboard we go!  I removed the radio and bezel, then made the appropriate connections, again per the diagram using wire taps as it is pretty tight in there for soldering.  Although I am not fond of wire taps, sometimes it is necessary due to working space constraints.  I then mounted the relay assembly to the screw holding the bottom of the upper duct.  A 7mm socket will do the trick.  I noticed after taking the pictures that the connector was pulled slightly to the left.  I corrected that and finished the mod by reconnecting the battery, testing functionality, then reinstalling the radio.





Now you have the functionality that is found on many newer vehicles that allows you to finish listening to that song on the radio after shutting off the engine (or rolling up the window that you forgot)!

   WARNING!!  Keep in mind that only the DRIVERS door will disengage the accessory power.  So if you open the passenger door, turn the key on and then off, the accessory power will remain ON!



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2003 Ranger Edge / Extended Cab / Flareside / 3.0L FLEX / Auto / 2WD / 8.8 Open 4:10 / Sonic Blue Pearl

So many mods... so little time...



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 Posted: Sat Nov 18th, 2017 03:18 am
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JAMMAN

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That is cool, it was cool of Bob to fish out the picture for you and equally as cool for you to post it here :)



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 Posted: Sat Nov 18th, 2017 12:21 pm
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mhoward
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This is actually one of my favorite mods... extremely handy and very easy to do!



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2003 Ranger Edge / Extended Cab / Flareside / 3.0L FLEX / Auto / 2WD / 8.8 Open 4:10 / Sonic Blue Pearl

So many mods... so little time...



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 Posted: Sat Nov 18th, 2017 05:38 pm
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Chris

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Is it a feature of US ignition keys that the accessory position of the key doesn't power the accessories?



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 Posted: Sat Nov 18th, 2017 05:42 pm
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I can understand why you don't understand Chris.



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00 XLT 4WD RCSB 3.GO! Jalapeño
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00 XLT 2WD RC Steppie 2.5 Dee Dee

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 Posted: Sat Nov 18th, 2017 06:09 pm
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That is basically the same circuit used in early MGBs to stop the overdrive dropping out if you were on the over run - except it used a vacuum switch to hold the power on until you accelerated and the overdrive could safely disengage.



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 Posted: Sat Nov 18th, 2017 09:48 pm
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Chris wrote: Is it a feature of US ignition keys that the accessory position of the key doesn't power the accessories?


Its a feature found in many newer cars as a way to roll up the windows, turn off wipers, etc.. as a latching relay sorta after parking and turning off the Ignition. This as a function wasn't really available by the time the Ranger platform had the rug pulled from under it here in the US.

When I had other purposes of conveniences in vehicles past, this was a great mod. But i find turning off things more prevalent and in need. For example I have a switch that kills the brake lights from being seen all while allowing the running lights to be seen if I turn them on.

I also have another switch setup nearly complete in thoughts that mimics the old SAAB 93 "stealth mode" which kills ALL dash/interior console lights except for the speedometer light.. Sometimes you just want to blend in and not be seen, then the fancy stuff seems have less luster.




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 Posted: Sat Nov 18th, 2017 09:52 pm
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Lol - all MGBs run in stealth mode - the dash lights are pretty dim at full strength - turn the little knob on the dash ( or slide in the case of some US ones) and they go out completely....



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 Posted: Sat Nov 18th, 2017 10:13 pm
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Chris wrote: Lol - all MGBs run in stealth mode - the dash lights are pretty dim at full strength - turn the little knob on the dash ( or slide in the case of some US ones) and they go out completely....


Duhhh Lucas wiring.. LOL



____________________
"Be never first, never last and never noticed." - Unknown

"The slave is held most securely when he is held by the chains of his own will and of his own fears, and when he is locked down by his own slavish desires for a comfortable life." - Michael Bunker

"Mundus vult decipi, ergo decipiatur. Mundus vult decipi, ergo decipiatur" - ~ attributed to Petronius (Gaius Petronius Arbiter (ca. 27–66 AD))
Roman courtier during the reign of Nero.

"Those who expect to reap the blessings of freedom, must, like men, undergo the fatigue of supporting it." - Thomas Paine


~ Undrstm8ed Truckumentry Write Up Pg.

~ Undrstm8ed Trailermentry Write Up Pg.
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 Posted: Wed Nov 22nd, 2017 04:05 pm
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JAMMAN

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My relays and socket came today for this mod, thanks again Mike :)



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0 PJ (Plain Jane)
00 XLT 2WD RC Steppie 2.5 Dee Dee

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 Posted: Thu Nov 23rd, 2017 12:39 am
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mhoward
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Cool! Let me know how it goes!



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-- Michael

2003 Ranger Edge / Extended Cab / Flareside / 3.0L FLEX / Auto / 2WD / 8.8 Open 4:10 / Sonic Blue Pearl

So many mods... so little time...



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 Posted: Thu Nov 23rd, 2017 12:49 am
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Will do!



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0 PJ (Plain Jane)
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
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 Posted: Sat Nov 25th, 2017 12:43 pm
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If my wife runs me off to work today I'll probably do this since yesterday was such a slow day I got all the admin work done. Then we will know 100% if it applies to a 2000 or not :)



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0 PJ (Plain Jane)
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
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 Posted: Sat Nov 25th, 2017 01:18 pm
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Good luck!



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2003 Ranger Edge / Extended Cab / Flareside / 3.0L FLEX / Auto / 2WD / 8.8 Open 4:10 / Sonic Blue Pearl

So many mods... so little time...



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Almost done oh boy oh boy oh boy



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0 PJ (Plain Jane)
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
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 Posted: Sat Nov 25th, 2017 08:09 pm
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LOL I take it the wiring is the same for the 2000?



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 Posted: Sun Nov 26th, 2017 12:09 am
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Very close, I'll PM you to see if it "was just me" then I'll post my findings. The results:






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00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0 PJ (Plain Jane)
00 XLT 2WD RC Steppie 2.5 Dee Dee

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Hey man, looks like you got it! :)



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I did make it work on a 2000, it is a little different.

The GEM is different altogether. It has one plug at the bottom and 3 facing the driver.

The yellow and black wire is in the top connector of the 3. You will have to take the 1 screw out of the bottom and lower the GEM to get to the connector:






You can see the 3 connectors when it is pulled down.

This is the only difference, the wire is the same color and serves the same purpose it is in a different place.

The diagram in the EVTM shows this connector FROM THE PLUG SIDE but it only has one yellow wire with a black stripe which can clearly be seen in the above picture.







Here are some more random shots of this particular install.















And the infamous butane soldering iron with heat shrink attachment:






____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0 PJ (Plain Jane)
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
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 Posted: Sun Nov 26th, 2017 03:23 am
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Excellent!  It's great to have a proven install for the 2000.  Thanks Jim!  Best I can tell, 1998/1999 share the same GEM as the 2000, so this mod should work 1998 to 2003.  With a little more research, possibly 1993 - 1997 as well?



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2003 Ranger Edge / Extended Cab / Flareside / 3.0L FLEX / Auto / 2WD / 8.8 Open 4:10 / Sonic Blue Pearl

So many mods... so little time...



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 Posted: Sun Nov 26th, 2017 10:33 am
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Wish I had one I'd love to figure it out. Makes me wonder if there is GEM hacking possible.

Since your mod is pure switches, the GEM doesn't play a part at all (except a convenient place to tap a wire) so there would be a way to apply it to any ranger with a door switch.



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0 PJ (Plain Jane)
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
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 Posted: Sun Nov 26th, 2017 01:16 pm
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That is true, the GEM really plays no part in the function of this mod. I remember reading somewhere that older Rangers had the old-style mechanical door switch. If anybody out there has that info, please post up!



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-- Michael

2003 Ranger Edge / Extended Cab / Flareside / 3.0L FLEX / Auto / 2WD / 8.8 Open 4:10 / Sonic Blue Pearl

So many mods... so little time...



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