On your cable from Ed, it there a molded gromet on it?

I have never replaced one on a GP, but I have on other pontiacs, and some have a rubber gromet thats molded onto the cable that goes thru the firewall. You may have to pop that out. I know its a real PITA to get out.

You may want to send a PM to trannyman95 as I am sure he has done a few.

webracin