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 Post subject: Tail light wiring
PostPosted: Sun Aug 26, 2018 11:14 pm 
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Anyone know the color correspondence for the kj tail lights? My right brake light won’t work but the tail light does so I know I have a wiring issue for the brake light since the brake and tail lights use the same bulb. I’d like to know what color wire is for the brakes so I can just run a jump wire from the left brake light but I don’t have a test light to find out which one it is through trail and error


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 Post subject: Re: Tail light wiring
PostPosted: Mon Aug 27, 2018 3:15 am 
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Location: White River in the Bush South Africa
Alycian wrote:
Anyone know the color correspondence for the kj tail lights? My right brake light won’t work but the tail light does so I know I have a wiring issue for the brake light since the brake and tail lights use the same bulb. I’d like to know what color wire is for the brakes so I can just run a jump wire from the left brake light but I don’t have a test light to find out which one it is through trail and error


Check if you are actually getting voltage at the bulb when brake pedal is jammed down.
The rear light sockets are known to overheat at times and the contacts melt themselves away into the plastic. Also obviously swap over or replace the bulb itself.

Best to download the KJ Service Manuals for your year KJ...except 2004..here.
The Wiring Diagrams are in section 8W....if you have the correct manuals you will be able to solve any future problems.

If yours is a 2004 model then check out the 2003 or 2005 models....the wire colors do change between years! You could put a voltmeter on the brake lamp that works....the colors for left and right side should be the same, 2005 model the wires are White/Tan :wink:

KJ Manuals: http://www.colorado4wheel.com/manuals/Jeep/KJ


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 Post subject: Re: Tail light wiring
PostPosted: Mon Aug 27, 2018 4:03 am 
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Change the bulb first as tail light and brake one are using different filaments in the bulb. If one is broken, the other one will still function.


Image

This is not the exact bulb used in Jeep, but the principal is the very same.

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 Post subject: Re: Tail light wiring
PostPosted: Mon Aug 27, 2018 4:16 am 
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Billybob wrote:
Alycian wrote:
Anyone know the color correspondence for the kj tail lights? My right brake light won’t work but the tail light does so I know I have a wiring issue for the brake light since the brake and tail lights use the same bulb. I’d like to know what color wire is for the brakes so I can just run a jump wire from the left brake light but I don’t have a test light to find out which one it is through trail and error


Check if you are actually getting voltage at the bulb when brake pedal is jammed down.
The rear light sockets are known to overheat at times and the contacts melt themselves away into the plastic. Also obviously swap over or replace the bulb itself.

Best to download the KJ Service Manuals for your year KJ...except 2004..here.
The Wiring Diagrams are in section 8W....if you have the correct manuals you will be able to solve any future problems.

If yours is a 2004 model then check out the 2003 or 2005 models....the wire colors do change between years! You could put a voltmeter on the brake lamp that works....the colors for left and right side should be the same, 2005 model the wires are White/Tan :wink:

KJ Manuals: http://www.colorado4wheel.com/manuals/Jeep/KJ

Thanks! Forgot to mention that I have an 06 KJ since I didn’t know Chrysler would change the wiring harness on the same generation. I’ve changed the bulb like three times hoping it was just garbage bulbs but no such luck. Somehow haven’t gotten pulled over even though it’s been like that for a good 3 month


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