Ammeter burnt out should I replace?

Here's what happens when 30+ years of weather and corrosion attack your bulkhead connector. Chrysler knew there was an issue with having a lot of current running through spade connectors which is why their fleet vehicles- taxis and police - had the wiring to the ammeter isolated and running through grommets in the firewall. My son had taken the car out for a spin and when he got home the dash lights and the dome light wouldn't turn off. Everything had melted together and they were back-feeding from the ammeter wiring. When I pulled the fuse block away from the bulkhead connector I could see that it had been taped up once before.

I just gifted this '74 B-body to my son. I rewired the dash beforehand by soldering Western Union splices and heat shrinking matching colored wires from our donor car. ( it was obviously taken off the road for an even worse melt down)

There's a lot of solutions but at the very least you need to inspect your wiring and look for any signs of overheating and look for corrosion or any signs of melting or overheating of the bulkhead connector. The first thing I did with my '70 Dart was to bypass the ammeter under the hood. I didn't want to have to do another rewire job. On his '74 we did the Chrysler fleet fix and ran everything through it's own grommets to the ammeter - no connectors at the firewall.

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