Having an issue with my tail lights staying on. Running an EZWIRE 12 circuit. Things I have done to trouble shoot.

Changed out the brake switch. The original switch came apart.

Checked the LED tail light,all wire correctly

Checked fuses, all ok

In the process of adding grounds, engine to frame, cab to frame, box to frame.

I’ve traced the brown tail light wire and so far no kinks.

Any suggestions

Might help if you told us what it was.

My 51 Plymouth uses a hydraulic pressure switch tied into the rear brake line to actuate the brake lights. That's factory, BTW. If it leaks internally it will do what you see.

Sorry, 52 Dodge PU, EZ Wring Kit

Uses GM column, with the Mopar style brake switch. Input wire shows hot, and when the brake is applied white wire which is the brake wire shows hot.
Brake light light up when the peddle is depressed. Brake light go off when the peddle is released. However the brake lights continue to stay on. I tried disconnecting the battery and removing the fuse. Hooked battery back up and reinstalled the fuse, tail light come on.

Might be the switch needs adjusting. Did you unplug the wire at the switch to see if the lights go out? That would tell you it's the switch. If you unplug it and the light stays on it's not the switch.

Does the column your using have a hazard button? Could be as simple as the button is on, or stuck. If it is indeed the hazard lights your seeing, that would also indicate that the hazard flasher unit is bad, or those hazard lights should be flashing. The hazard lights over power everything else through the turn signal and brake light switches. If the hazard button is engaged, the brake lights nor the turn signals (in either direction) should work.

I know its pretty stupid, but I have to ask, are the lights you are seeing turn/brake, or tail/parking lights? You have referenced both in your descriptions. Do the lights get brighter if the brake/turn lights are activated? Also, do you have any lights on the front of the truck, particularly the front turn lights?

I had an issue with my truck right after I got it together. All the turn signals worked great. The headlights and tail lights worked great, but if you turned on the headlights and either turn signal, both of the rear lights would go full bright. I ran through everything I could think of over 4 days. I enlisted another car wiring guy, and he was as stumped as I was. What I found, by accident, was the wire harness I used had provisions for side marker lights. None were being used on my truck, but the two front side light terminal sockets were shorted out! After I cut those two sockets off, all the lights functioned correctly.

One more stupid thought, are you using LED lighting? Gene

If you have full LED lights (front and rear LED) for the turn signals, sometimes the LED lights do not have enough resistance to heat up the flasher unit

and they will light, but won't flash. You can buy a set of resistors, or a special LED flasher unit, for the LED lights to solve that problem. I've encountered needing the resistors on about 1/2 of the vehicles I've installed full (all 4) turn lights into. If you only have only, say the rear LED lights, and regular incandescent front lights, there doesn't seem to be a problem. The LED resistance issue wouldn't cause the lights to stay on though.

I install at least rear LED lighting in everything I own if I can. Too many hot rods have very poor rear lighting, in this day and age, that is pretty dumb. Gene

That would do it. The flasher switch cancels the brake light for the side the signal is turned on. The 4 way hazard flashers also run through that same switch. While the wires are out of the column, you should look to see if any wires may have the shield coating broken or rubber through, that can cause all kinds of strange things to happen as well.