1972 Satellite gauge question

[66Sprint200]

Hello everybody. I'm Michael. I'm here because I'm helping my friend fix his car, a 1972 Plymouth Satellite Sebring.

Here is where we need help. When he got the car, someone had taken the original gauges out and cut the wires at the printed circuit board connector. So he found a set of good rallye gauges from a 1973 Charger (150 speedo, large clock, split ammeter, temp, oil, and fuel gauges). I'm very good with electricity and can rebuild his harness to accept the rallye gauges (I've already started), but the one thing that I'm not 100% sure on, is how to connect the voltage regulator to the cars harness (should it just be a ground, or does it get power somewhere?). I would turn to a wiring diagram, but I can't find a wiring diagram of cars equipped with the rallye guages. Can anybody help me? Thanks, Michael.

 

[midnightrider1818]

Hello everybody. I'm Michael. I'm here because I'm helping my friend fix his car, a 1972 Plymouth Satellite Sebring.

Here is where we need help. When he got the car, someone had taken the original gauges out and cut the wires at the printed circuit board connector. So he found a set of good rallye gauges from a 1973 Charger (150 speedo, large clock, split ammeter, temp, oil, and fuel gauges). I'm very good with electricity and can rebuild his harness to accept the rallye gauges (I've already started), but the one thing that I'm not 100% sure on, is how to connect the voltage regulator to the cars harness (should it just be a ground, or does it get power somewhere?). I would turn to a wiring diagram, but I can't find a wiring diagram of cars equipped with the rallye guages. Can anybody help me? Thanks, Michael.

find the 12 v hot wire. run that to the regualator. coming out of the regulator will be 5 v. that runs the fuel gauge. temp gauge and oil pressure gauge. the ammeter has to be hooked up in series since it is amps. in other words hot in hot out. the clock runs on a constand 12 v. also on the instrument cluster is a place for a ground wire. make sure you have a good ground and on the other side of the instruments goes the signal wire. take a meter and do continuity checks to the oil sending unit, temp sending unit and fuel gauge sending unit. this will tell you which wires are the signal wires. hope this helps.

 

[66Sprint200]

Thank you, that is EXACTLY what I needed. I had already finished the plugs for the gauges, the only thing that was hanging us up was the voltage regulator.

 

[72RoadrunnerGTX]

 

[66Sprint200]

72roadrunner, do you think you could send me that whole page?

 

[72RoadrunnerGTX]

 

[66Sprint200]

What book are those from?

 

[72RoadrunnerGTX]

72' Plymouth FSM

 

[66Sprint200]

The wiring is done, but there is one problem. We have the correct blue w/ white tracer "hot" wire going to the voltage regulator. We have the correct ground grounding it. All the gauges are connected and read correctly. The only thing not connected is gauge lights (we are waiting for new lamp sockets to arrive).

But the car will not start. What could be causing the problem?