Headlight switch backlight dimmer blows horn fuse...???

Oldmanmopar said
Every time there is a weird electrical problem it is always a 74-76. I pulled my hair out on a couple of these cars. Even installed a used harness from another car . Then the problem switched to something else.

These cars have bulk head and harness plug problems. They must have went to a different vender for the ends. Once you have an issue with one thing . You will be chasing open circuits . These cars have a corrosion problem on the wire ends. Fix one and you cause another by wiggling something you shouldn't have touched. Good luck it could be something simple like slamming the hood real hard.

The only thing that turns me off on a 74-76 A-bodies is the park bench bumpers and the "electrical problems".

Find a complete 73 harness and components front to back. You will never regret it.

Yeah its been a struggle.

Bench tested the cluster. All good there.

In a weird development i noticed a little indicator light that i wired in for a line lock indicator will illuminate with the ammeter unplu

RedFish said
Illumination is the orange wires. There are more than the inst' panel illumination. If you have column shift you have orange wire to a lamp at PRNDL. There's a horn wire in the steering column also. I don't know the problem is in the column, just thinking where the 2 circuits get close together. Good hunting

My column light is no longer in use, but you are correct. That fuse blows parking, tail lights and horn.

Orange wire into the round gauge cluster socket also appears to be the path to the floor lamp under the dash. Im contemplating snipping the orange wire. And putting both ends of the pigtail on different sources. The gauge backlight on the parking lamps, and the floor lighting on my (already toggle switched) map light

Hate to fix it with more redneck splicing, but i think a clean job of the above is bettet than tracing whatever grounding issue this actually is.

Unless someone has a better idea