Re: rear defrost, interior lights, seat belt warning, intermittent windshield wiper
Focus's are notorious for ground problems, check your battery cables and the small ground that goes to the battery, If had to replace alot of battery cable beacause of corrison. The wiper relay problem is that the wiper relays don't park after they are shut off. and the fix is a new wiper relay from ford and you can find the location of the relay in your owners manual. I think its blue or gray I forget. Also check your rear hatch wiring for broken wires. It's the harness that connects the liftgate to the roof, It's an easy repair. your car might have several problems hope this helps.