Electrical Issues

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SonofMa

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Electrical Issues:
1. Center High Mounted or third brake light is not working. The two bulbs were burnt so I replaced it but still not working.

2. Tail light on driver side is not working. The brake, turn signal, hazard are working. This is on the same bulb. The license plate light is also not working so I think its on the same circuit.

Done so far: I replaced the Headlamp switch. Loosen, clean and re-tightened negative battery cable at engine side. Also disconnected, cleaned body ground connection at the tail section. It didn't fix the issue.

I am hoping someone had this issues and kindly post the fix. Thanks in advance for your time.
 
Hey SonofMa!

I would start by checking all the fuses. I had similar issues with my Sonoma and i'm sorry to say that there may not be an easy fix


I've not had trouble with the third brake light besides swapping the bulb but in regards to the Tail light on driver side I would recommend Checking the wiring. In my experience, the wire shielding for the tail lights had all melted together causing the lights to short circuit and work as they please. I bought some wire and build the section, then just swapped one wire out at a time. I only had to swap out about 2 feet of wire, and if I can remember correctly there's only 6 wires. The Wiring in the rear is all accessible from under the truck, or from behind the the light housing. The wires are color coded which makes things easy.

Good Luck!!!!


OnlySonoma
 
Thanks "OnlySonoma" I did solve the the tail light issue. I finally unwrap the wire harness and found the problem. The spliced wire got unraveled still wrapped.

The third brake light there was no power (yellow wire). Three wires connector coming in (yellow, light blue and black) and connect to the 4 wire. Yellow and black to 3rd brake lite and yellow and orange to dome lite. So I cut incoming yellow and connect directly to the 3rd brake lite yellow. There is power and bulb is lit all the time. The dome lite no power which means I have to splice the dome yellow wire for power. The incoming light blue wire I'm not sure yet. I'm thinking to splice to yellow. That might be coming from brake switch. Been busy and more concerned with tail light. Now its good.
 
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