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How to install 3rd brake light with turn signals       #: 368
 Moderated by: NoPower, Mike69, MaDMaXX
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 Posted: Sun Dec 17th, 2017 11:43 pm
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JAMMAN

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I was supposed to make a temperature sensor holder for a radiator hose today, but my wife was following me home yesterday accidentally and said my 3rd brake light wasn't working. Since I have a cool one I decided to install it.

First the original. Never mind the dirty truck it was raining when I left so I didn't wash it.



What I wanted to put in there was a Buggman prototype of the 3rd light with turn signals, 9 super bright LED's with the 2 on the right and 2 on the left separated from the rest for turn signals.





 

It requires some creative wiring. Being LED's it doesn't require a lot of amperage so I used some 4 conductor alarm wire. Ran it through the light hole and to the left of the driver seat under the molding to where the e-brake pedal is.

I wanted to hit the fuse box.









You could splice this to several different locations, I chose fuses 3 and 7 on the load side. Fuses 3 and 7 are only present on trucks with the tow package, and I figured it added an extra layer of protection if I pinched a wire accidentally during the installation. The fuse would blow before damaging anything else.











Yellow and dark green wires, they were easy to spot on the back of the fuse panel which comes out rather easily with 3 bolts (torx and hex heads both)



If you don't have the towing package just make sure you hook to the wires coming from the multifunction switch that go to the REAR lights. Hooking to the front you would still get turn signals but you wouldn't get all the lights on during normal braking.



I ended up putting a ring terminal to the parking brake mounting bolt for ground since there are no grounds at the fuse box go figure :)

Subsequent light builds will probably have a common ground and just 2 hot wires for right and left, I'll discuss this with Buggman later.

Here is a video of the result:




____________________
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: Mon Dec 18th, 2017 01:50 am
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buggman

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that looks awesome!
i didn't realize the turns would come on with the brakes too, BONUS!!



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1996 XLT Supercab 4.0L 4x4
Lots of Explorer parts & tons of my custom mods.
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 Posted: Mon Dec 18th, 2017 01:55 am
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JAMMAN

Owns A Torsen


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Planned it that way from the gate :) I love it, will have to transfer it to the V8 machine when I switch cap for tonneau.



____________________
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: Mon Dec 18th, 2017 05:48 am
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MaDMaXX

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Nicely mod'd - not sure i approve the change of mod for the day though ;)



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2002 - 3.0 - 4x2 - Edge

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 Posted: Tue Dec 19th, 2017 02:14 am
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JAMMAN

Owns A Torsen


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buggman wrote: that looks awesome!
i didn't realize the turns would come on with the brakes too, BONUS!!


Thinking about it... this would only work on 2000 + without extra mods isn't the turn signal separate from the brake light in the 99 back?



____________________
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: Tue Dec 19th, 2017 05:30 am
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buggman

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oh yeah, i forget about the 00+ trucks having the 2 bulb tails.
i wonder if it would work on our older trucks if we were to tap the trailer wiring rather than at the brake lights... hmmm might have another project to test out when it warms up.



____________________
1996 XLT Supercab 4.0L 4x4
Lots of Explorer parts & tons of my custom mods.
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 Posted: Tue Dec 19th, 2017 09:29 am
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JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5376
Name: Jim
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Hmmm that would work providing there is trailer wiring wonder how common that is.



____________________
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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