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Old 12-14-2019, 02:57 PM
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Join Date: May 2018
Location: Andover MN
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Backup LIght Wiring

Howdy;
Just reading the last thread about the 4-pin connector for trailer lights and it got me thinking about adding an additional set of backup lights on my JL Sahara with the factory tow package.

My thought process was that I could add a couple of small LEDs under my bumper and tap into the backup wire that feeds the 7-pin connector, so that I wouldn't have to trace all the way back to the tail lights and add any additional draw from those wires (I have the factory LED package). The new lights I picked up are from KC and are 20W floods that draw 1.6 Amps.

Anyone see any issues with tapping into the trailer wiring? I want the lights to come on/go off whenever I put the JL into reverse (don't want to have to flip a switch). And it is very, very rare that I pull a trailer with this vehicle.

Issues? Other suggestions?

Thx - BV

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Old 12-14-2019, 09:39 PM   #2
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I don’t recall ever seeing a backup source in a 7 pin trailer circuit

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Old 12-15-2019, 08:28 AM
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I believe that the center pin has the backup lights. I'll give it a quick test later this morning.
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Old 12-15-2019, 11:03 AM   #4
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Quote:
Originally Posted by stovebolt1 View Post
Howdy;
Just reading the last thread about the 4-pin connector for trailer lights and it got me thinking about adding an additional set of backup lights on my JL Sahara with the factory tow package.

My thought process was that I could add a couple of small LEDs under my bumper and tap into the backup wire that feeds the 7-pin connector, so that I wouldn't have to trace all the way back to the tail lights and add any additional draw from those wires (I have the factory LED package). The new lights I picked up are from KC and are 20W floods that draw 1.6 Amps.

Anyone see any issues with tapping into the trailer wiring? I want the lights to come on/go off whenever I put the JL into reverse (don't want to have to flip a switch). And it is very, very rare that I pull a trailer with this vehicle.

Issues? Other suggestions?

Thx - BV

At the backside of the 7 pin on the JL, you want to tap into the white wire with the orange trace/stripe. You will need to ground your LED backup lights. For that ground, just drill a small hole in the underside of the steel bumper and use a self taping screw in it for the ground.

I have the LED package on my JL. I did as mentioned. Easy to do and no issues post doing.
It has no negative impact on your trailer wiring. Your aux. b/u lights will even/still work when towing.
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