If they are not a Mopar orientated shop good luck. They will probably start replacing parts.
If I were you, I would check all the pertinent wires out, in the bulkhead connector. Sounds like it could be in the connectors their. Get a factory wiring diagram, they are most help full.
barracudadave67
They aren't to bad going to start with ignition switch and go from there. It's 2 brothers and they are into old cars one has. Charger and the other is building a truck. They did work for me before.