^^^^what they said, u'll see rubber plugs or bungs or however u interpret their shape on the firewall with big black wiring goin through them, thats the ticket there! u can slice it open a bit further with a stanley if its real tight, or poke a screwdriver through with some string on the end thats tied to your wiring, then just pull the string and wiring through, bob's your uncle and fanny's your aunt! Phil.