Turn signal replaced drivers side rear light harness but my turn signal still doesent work need wiring diagram

The first thing to check is the turn signal bulbs. Assuming those are OK, do the brake lights work? If they do, then double check the light assemblies nearby earth points. Run a wire from the battery (on the +12v on a tail light bulb) and test that the turn signal bulbs do light up. There could be dirt/corrosion in the bulb connector. If all that is OK, there'a failure in the wiring harness. Look under the carpet, driver's side for rust and harness corrosion.

That Uhaul harness is the first thing to check. Next would be the ground wire/s at the rear lamp. Your problem is that when the head lights are off, the rear light is grounded the the headlights(no power to the headlights). When you turn the head lights on, you loose the ground because the headlights over power the rear ground. Your flasher is not the problem. Use the OHM part of the meter(lowest setting) to check for ground. Anything above 5 Ohms is a wire replacement.

With a test light check if you have power there with lights on and with lights off, compare left side with right side as far as location in the tail lamp plug for the tail lamp park lights.Trace the harness back to the left side underneath usual corrosion in this area.

under the rear truck there is a junction block with 3 harness
turn signals left side yellow wire
turn signal right side green wire
parking lights brown wire
you should find your problem could be the junction block itself look for water inside terminal at harness
hope it helps

You said same socket, so it couldn't be a bad ground or then neither light would work. And you also said there is no power on the tail light wire at the socket? There should be voltage on the wire with park lights on. Find the rear tail harness. Somewhere there at the rear of the car the park light wire (the tail lights, running lights, all the same) will splice off to both sides of the car. You have passenger side lights, so you know the signal is good that far. Somewhere between the splice and the driver's side, the power is lost, maybe right at the splice. So find the harness, it will be either under the car along the frame, or inside the trunk. That's an old effin car, Howard. Are you sure you want to nurse it back to life? lol. Buy a Haynes manual for it - it will save you money in repairs. Good wiring diagrams, too.
Are those gauges in the instrument panel, and not aftermarket? If they are in the dash, I may know what it might be. I have an '87 Sentra. Fuel gauge, temperature gauge, and warning lights, and turn signals would only work intermittently. Car would start and run, but those things- sometimes not, or they would come on way after down the road. I traced it down to a faulty ignition relay in a relay block above the instrument fuse panel. The run wire out of the ignition switch trips this relay on, and it sends power to a portion of the fuse panel that has the fuses for the gauges and turn signal lights. Replacing the relay was the answer-they always work now. Your gauges may be similar, but almost as likely a loose connection somewhere.

No you cannot just connect the 3rd brake light to the left/right brake light, chances are they also function independently as turn signals. The type of trailer wiring harness you speak of is usually installed by unplugging the wiring harness and plugging that connector inline. The two sides of that harness should plug back together.

Check your fuses underneath the drivers side steering wheel. Flip the plastic cover over and there will be a diagram showing the fuse that controls the taillights/stoplamp. Pull the fuse out and replace it with the same number fuse and your taillights and brake lights will work again. If the fuses are ok, pull each taillight bulb out and replace it with a new bulb. Sometimes when one light bulb fails, all of them will fail.

Hello Greg. Almost definitely you have a poor ground in the rear of your van due to corrosion. Get under the van in the problem area and trace the ground wire to the frame. Generally you will find that the area is corroded. Unscrew or unbolt the ground wire and remove the crud with a piece of emery cloth. clean up both the end of the ground wire and the frame itself, get it all down to bare metal. Then reassemble. regards, Joe

What may have happened is either the headlights wiring or the parking lights wiring somewhere along the wiring fused to the left turn signals wiring. Depending on if the turn signals go on when you put the parking lights on or the headlights on.

If the signals come on when you turn on the headlights than you only need to locate the light green wire that comes off the left turn signal harness.

Next follow that wire the entire way back to the firewall looking for another wire fused to that wire as you go.

If there are no signs of this you need to continue looking on the other side of the firewall all the way back to the turn signal and hazard flasher unit which is a black box that connects to a black harness located next to a grey harness behind the knee bolster.

But if the signals come on when you turn on the parking lights than you will also need to check the wiring from the rear left signal and follow that light green wire all the way back to the turn signal and hazard flasher unit.

This should fix your problem, but if not than your problem may lay within the the wiring between the turn signal/hazard switches and the turn signal and hazard flasher unit.

Also you may have a burnt circuit in the junction block. This block is where the light green from the rear left signal and front left signal meet. Don't have a description but if you cannot find it let me know and I will go out to the yard and look myself and let you know.

I heard a loud knocking noise on the front left driver side. There are no warning lights which appear on the dash. I have a 1997 toyota corolla manual transmission. Help!!!!!!!!!!!!