hey was wondering if some one had a wiring diagram for an 89-91 tbi distributor. i bought a new one direct replacement and it has the 4 pin connector and a 2 pin connector, now the truck wiring has a 4 pin and a one pin and my haynes manual only shows a 4 pin and a 1 pin the one pin is a hot with ignition to start. havent fired it yet but wondering if this will effect it of can i forget it