I just recently picked up a 93 FD and it has started having some electrical issues. Any help trying to narrow down where to look would be greatly appreciated. These issues happen both while driving and while the car is parked and turned off with the key out and car locked.

Issues are:

Hazard lights flash randomly (intermittent)
Horn honks randomly (intermittent)
Seat belt indicator flashes and beeps randomly (intermittent)

I am thinking there is an issue with the body harness possibly from a previously installed alarm or something along those lines. If you have heard of an issue like any of these and what was done to correct it please let me know.

Thanks,
Nathan