Relay Locations Below is a list of the common relays used on the Fiero and their location. Air Conditioning Relay 1. Located on the rear firewall in the engine compartment, behind the driver's seat, Figure 1 Coolant Fan Relay 2. Located in front of the left headlamp assembly, on the radiator support, Figure 2. Decklid Release Relay 3. Located under the driver's side dash on Pontiac Fiero Car Alarm Wiring Information Commando Car Alarms offers free wiring diagrams for your Pontiac Fiero. Use this information for installing car alarm, remote car starters and keyless entry into a Fiero. View our complete listing of wiring diagrams for all years of Pontiac Fiero. Service: 954-728-9571: Items: 0 - Total: $0 See Cart | Check Out: Item Links! Related searches for fiero tail wiring diagram 1986 pontiac fiero wiring diagrampontiac fiero wiring diagramfiero wiring harnessfiero fuse panelfiero steering column rattlefiero 3800 wiringfiero engine swap 3800