Since I was there I pulled the cluster and the good news is there is no heat damage or discoloration on neither the red or black terminals and all wiring looks good and pliable so all the damaged was confined to the block and out about 2 inches. Now to decide on my next move I can simply repair the lesser wires and replace the damage wire from the block to the ammeter and be done with it but obviously the block is the weak point. Unless someone knows of a smaller terminal block I have looked up pass through terminal blocks but most of them need 2 one inch holes drilled for them and there is not a lot room on this firewall to do that but I could drill a smaller hole with a grommet and use a surface mount block in the engine compartment. Thanks for all the replies, Lou