Steering tock ignition Switch Windshield wipers speed switch Starter and back-up light switch (automatic transmission) Power window switch Power window switch. 124 SPIDER 1980 WIRING DIAGRAMS Table of Contents CIRCUITS Ignition, starter, alternator, engine cooling fan, idle shutoff solenoid, and power distribution circuits. The attached Picture Shows what looks like the original wires colors to the Ignition Switch. With 18 Fiat Brian's recommendation of which terminal each wire should connect to I hit the starter but still no go.. I don't have a wiring diagram for a '78 spider, but I'm guessing it's similar to earlier years. If that's the case, there should be.
i removed the switch and tested the terminals. I get continuity between posts 30 and int when the key is turned on and positions 30 and 16 when put in the start position. All other terminals do not show continuity with a multimeter. I suspect the switch is bad and have wiring diagrams for most other years of spiders, but not the one for a 75.. So when you insert the key into the ignition switch, the radio automatically comes on. This wire is fused on the 2000 Spiders but to be on the same side, install an in-line fuse before the radio. Spider wiring diagrams: UPDATE!! Finally! The day has come. 124/2000 Spider Wiring diagrams are now available for downloading in ZIP format!