If only one yellow wire is hot, the splice that joins them is failed. Only one of the switch terminals should turn on the test light. For that to work, the brake wire runs to the turn indicator, so that when you turn on the flashing turn signal, it switches out the brake light signal for that side so that the two signals don't collide. Let's start with the first. They look something like this: They work something like this: You can get them at places like Napa or Now you need another 2 pin flasher unit. Closely examine the socket and connections for corrosion, loose or broken wires. I had the same problem on my 91 K1500.
Check to see if your hazard lights work. There are complicated ways to wire in multiple relays to do it, and aftermarket units that will do this but there is an easier way. After many days probably a full week of taking it apart put it back together I figured out the problem was the hole at the end of the shaft that slides onto the brake pedal with the switch is therefore I drilled the hole of slightly larger and that fix my problem I went to the auto parts store and look up the parts numbers and they are definitely different numbers I had this same problem. I had the same problems trying to wire up my cap a few months ago. I have been fighting a taillight issue for 2 days. Turn your flashers on to check the bulbs. Either you have a broken wire, or blown fuse or you have a messed up blinker switch.
Anybody know what I need to do, I'd rather not run a wire all the way up to the cab if I don't have to. It is buried in the loom. The end yellow lead was melted in the connector and the female plug for this wire was black. They are attached to the fuse terminals. Both yellow wires should go hot when pedal is pushed.
Moat likely a bad or broken ground, circuit board that is on the back of the taillight or a broken wire. Without having to splice into the factory pigtail. We have over lots of customer reviews on Chevy Tail Light Wiring Harness to help you find exactly what you need. All other lights are working. I put in a new switch and all was well for 3 months. You can start your troubleshooting at the malfunctioning brake light assembly, if only that light seems broken.
We offer a wide range of Chevy Tail Light Wiring Harnesss of all the best brands in the industry at an affordable rate that fits the Price Range you are looking for. They will combine the brake wiring and the turn signal wiring so they will work. Turn signal and runninglights and emergency flashers all work. I know it works with turn signal lights but how are they connected. Also check the turn signals. Its the taillight circuit board or a broken wire.
No underhood fuse panel, fuse panel at driver's knee, singles scattered. This is for the trailer middle mount 3rd brake light. Location of the relay depends on the year of the truck but mine was in the engine compartment on firewall by the master cylinder. Looked the wire connections over and came to a ground at the frame near the trailer hitch lead. I got one of those light up bowtie things to fit in the reciever and I dont want to just plug it into the factory harness for it will just look retarded, so I want to put a plug in behind there to plug it into.
Black wires at the lamps provide the ground connections. I got a 2 wire plug for the canopy so if I need to take the canopy off, I don't have to cut the wires, I can just unplug them. No problem, you just need another toggle switch and flasher unit. I have a wiring diagram that shows this wiring circuit pretty well, but I can't seem to get it to the page as a thumbnail. If no click, unplug brake light relay on firewall above brake booster.
The most common reason rear lights of any kind will fail is rotted wires. If both yellow go hot with pedal, check that the black wire for relay is making a good connection to ground by using ohmmeter. Just an update, I got the brake light wired up and working last night. If your third brake light works either way but the rear brake lights stop working when the truck is on its a faulty ground wire to the stop lamp relay. Then go to the other taillight do samething. There should be an orange wire going in to the switch, and a white wire coming out.
You may also have circuit boards on back of taillights and if so the circuit boards could be bad. For a 3 wire into 2 wire converter, just take the tail light wire past it. Thought I had done a thourough job but still no change. Worked great when I drove it off the lot. No Tail Light Repair Tail Lamp Replacement Brake Light Not Working No Reverse Lights Blinker Not Working No Brake Lights. I couldnt figure out why my light didn't work.