Distributor Module: 82-91 GM various (7 pin ) - GMREAD DESCRIPTION ON LHS LOWER PAGE: This 7 pin (5 + 2) GM Distributor Module is located at the bottom of the distributor plate and controls the flow of current through the distributor. IT HAS 7 pins (not 4) as shown.. visible from the side of the lower edge of the dissy cap. Commonly found on 82 92 GM vehicles such as Camaro Firebird TA & Corvette and some lite commercials. You need to check yours before ordering. THIS IS THE GM AC DELCO ORIGINAL