Date registered: Jul 2004
Mentioned: 3 Post(s)
Quoted: 52 Post(s)
The first thing is to methodically go through all of the fuses. See if any are blown, and check to see what is on that circuit.
Anything with a diode or semiconductor in it is either destroyed and/or blew a fuse. Generally, radio's have diodes that will blow a fuse if power is reversed.
I'd remove the alternator and see if it is shorted. It may no longer work and/or it may present a short. If it has an external regulator, that may be damaged.
Is the ignition in any way electronic?
Some coils can be damaged if polarity is reversed.
This IS fixable, you might get lucky and it might not cost much.
The starter, I don't know if it can be damaged by reverse polarity. With that kind of current, no way there's any semiconductors in it. The damage may involve that it's jammed (mechanical?)
Homebrew MB First Gear Start!