Non-starting '89 Spider - ignition switch?
I'm trying to troubleshoot my friend's 89 Spider not starting. He drove it for an hour yesterday, parked it and then it wouldn't start.
It appears that everything that doesn't need the ignition switch is working fine - headlights, horn, electric side mirrors, hazard lights. However, anything requiring the switch doesn't work (e.g. radio in the accessory position) and the fuel pump doesn't show signs of life in the first position and the car won't even try to turn over. Headlights don't dim when the key is turned.
To address the problem, I checked all the fuses - they are all good (with one exception, see below). I cleaned off all of the typically corroded contact sites, including on the left fender. PO put a fuse there and that is in tact.
So everything is pointing to the ignition switch, but two things don't make sense. The first is that the 8A fuse by the CPU was burnt out. Replacing it didn't fix the problem. The second is that the PO had installed a starter relay already, so the switch should have been protected.
Any hints tying in the burnt fuel pump fuse and the ignition switch going bad? Our next step is to start tearing apart the dash but I really don't want to go down the ignition switch replacement pathway if there are any other ideas.
All suggestions welcome.