How do I replace the starter relay in my 1990 F150? Which wires go on which terminals?
Ford F150 Straight 6Already Tried: Put in a new starter motor. Confirmed the old one was bad. Friend who removed relay didn't keep track of wiring positions. Has new ignition switch and alternator. Confirmed battery is good. Can't even get a click when turning the switch and other major electrical items not working (headlights, horn, etc.).
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The relay is mounted on the passenger side inner fender and is held on with 2 8mm bolts. There is a battery side post and a starter side post. On the battery side post there are some smaller extra fuse link wires which mount on the battery positive cable side with the positive battery cable. The other large post goes to the starter cable. Then there is one small wire (red/blue) which is the crank signel wire from the key which goes on the small pin on the front of the solenoid.
23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs