[BARRACUDA1968]

I have a 78 Y88 Trans Am and I installed a new battery and ground cable this spring.

Started the car and noticed my left turn indicator stays on all the time. It blinks fine but stays lit. All lights work on the exterior. My tach also quit working.

Second issue I noticed when I put it in the garage is the dash lights stay on when the car is off. I pulled the cluster and found the circuit board had some bad spots on it. Installed a new one still have the issue.

I tested the dash harness and the only wire that has power is the orange and black wire for the clock when the car is off. I can't figure out where the cluster is getting power to light up the dash lights?

So I installed a new headlight switch, still have the issue. If I dim the lights when the car is off the cluster will dim and when they go out the HVAC light comes on?

I checked ground to the dash and re secured it. Still have the issue.

Basically I have dash lights all the time. With the car off and headlight switch off the cluster lights up but no other gauge in the car does.

If I pull the light switch on I lose a few lights in the cluster but then the volt, gas gauge and HVAC lights come on. Just not very bright.

One other thing that I will mention is the first day I took it for a drive it ran fine, I went 60 to 70 miles cruising and stopped at a buddies house on the way home. When I left his place and turned on the highway it cut out like it lost electrical power or fuel. It was a very quick cut out so I doubt fuel related? It did this for a quarter mile or so then quit doing it.

I'm at a loss as to what to do now?

How are my gauge lights getting power when it's not coming through the dash harness?

Any suggestions would be great!