1985 M1008 ground cable from negative battery cable to firewall keeps melting

[Ospreyman]

I have a 1985 M1008, when starting up, the small ground cable from the negative battery cable to the firewall keeps melting, any ideas on what could be causuing this? bad voltage regulator?

Ospreyman

 

[Keith_J]

I would say you have a problem in the connection of the fat #2 AWG wire to the engine. Start at the front battery negative terminal, locate the #2 AWG wire on that battery terminal, trace it to the firewall. It terminates at the negative bus, on the left (driver's side) end of that bus, there is another #2 AWG wire that goes to the intake manifold. Or there should be. Check both ends. There is also an engine bonding strap around there, this bonds the engine to chassis/body.

 

[Ospreyman]

Thanks for quick response, greatly appreciated, will check all connections as suggested.

Ospreyman