73 Challenger wiring questions

[Mopar1973]

I have a unique wiring problem and I'm absolutely stumped. I have a rallye dash with a 5in tach mounted on the column and a pod of gauges mounted under the dash (water temp, oil pressure, volts). All gauges work but I have no turn signals, dash lights (std. gauges in cluster), gauge lights (ie. tach and pod), and no radio. The hazard lights still work both in car on the cluster and outside of the car with all of the lenses. If I keep replacing the 30amp fuse it will all work for a few seconds and when I get going, I will lose the above mentioned and the car will quit running and refuse to fire.

 

[Mopar1973]

Can anyone help me? I'm at a loss. Thanks a bunch!

 

[moparleo]

First you need to decide which gauges you want to use. If you go with the aftermarket you will have to find someone who does automotive electrcal repair. Also did you just get this car ? Any history ? You may have to start from scratch and get a new dash harness . There are more than likely several patches on the original harness. Otherwise you have too much to try to diagnose when you have unknown mods to your harness.

 

[Mopar1973]

I have owned the car for a little over 2 years now. All factory gauges minus the tach and the clock worked up until I disconnected them. The gauges were wired in by a friend and Mopar enthusiast of over 20 years and they worked great up until recently. The whole ignition system was replaced all new fuel line brake lines brakes all the way around new everything underneath and the harness under the dash looks brand new as well. At the minimum recently replaced.

 

[Mopar1973]

New shocks, super stock springs, fresh engine and trans. The under hood harness looks original to the car. The interior was completely replaced minus the original dash which has a few cracks.

 

[moparleo]

Ok So he didn't touch any of the stock wiring and rewired the aftermarket gauges seperately? You say until recently every thing was working, what has changed ? We only need info about the gauges and wiring right now. Is the friend who wired the gauges available to look at it or get some info from ?