DRL Electrical issue
Thread Starter
Cruising
Joined: Oct 2024
Posts: 12
Likes: 1
DRL Electrical issue
So I was installing the knight drive tv rgb headlight kit and when I spliced the wires to my parking lights, now my drls don’t work at all nor my headlight motors. When I flip my lights to the running lights nothing happens on the dash on my parking lights side markers tail lights nothing. Same with when I unlock the car none of the lights turn on. The only lights that still work are my turn signals/hazards, and my high and low beam when I have the headlights connected. Even with everything from the kid disconnected I still have this issue. None of the suspected fuses I found seemed to be damaged. Are they any fuses I could check or anything else it might be?
Thread Starter
Cruising
Joined: Oct 2024
Posts: 12
Likes: 1
Melting Slicks
Joined: Sep 2021
Posts: 2,555
Likes: 1,213
Come on Lucas, I'm not sitting in front of your car looking at the wiring. I'm guessing based on the information you've provided.
If it worked for others but not for you either you did something wrong or something about your car is different.
Got pictures of the wiring? Instructions for the splicing?
Instructor
Joined: Sep 2008
Posts: 155
Likes: 33
From: Plano TX
If you get no help from the vendor, then you need to start electrical troubleshooting in a systematic fashion. The first step is to verify that your fuses actually works with a meter.
Have you verified on a bench that if the light kit you are trying to install works? Make sure that kit is not causing electrical issues.
Look like you are tapping in parallel, so I would remove what ever you installed from the circuit and get the stock circuit working again. Measure for power at your drl with the circuit energized. Assuming your drl worked before, if it does not work now, you should see no power there. Then work backwards in the circuit until you found where circuit broke. If you trust your work, and the only thing you did is the wire tap, then that point is highly suspected. You can use a meter and verify that your tap is good.
The other concern is the drl control module. You may have damage that with incorrect tap.
I personally hate wire taping like that. It seems to be a failure point just waiting to happen. I would have designed it using a fuse tap and run separate wire. But I am not the engineer here.
Have you verified on a bench that if the light kit you are trying to install works? Make sure that kit is not causing electrical issues.
Look like you are tapping in parallel, so I would remove what ever you installed from the circuit and get the stock circuit working again. Measure for power at your drl with the circuit energized. Assuming your drl worked before, if it does not work now, you should see no power there. Then work backwards in the circuit until you found where circuit broke. If you trust your work, and the only thing you did is the wire tap, then that point is highly suspected. You can use a meter and verify that your tap is good.
The other concern is the drl control module. You may have damage that with incorrect tap.
I personally hate wire taping like that. It seems to be a failure point just waiting to happen. I would have designed it using a fuse tap and run separate wire. But I am not the engineer here.
Last edited by PlanoLeMans; May 22, 2025 at 06:52 AM.
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