Had a similar problem on mine recently. The electronic parts fuse is for lots of items such as sunroof, windows etc. There are plugs for the door switch, seatbelt reel and under seat sensor to know your bum is on the seat or not. Try unplugging all of these, as at a glance they are exactly the same. I had mixed up one of the door plugs for a seat belt one and was blowing the fuse.

As for wipers, the previous owner will have cut the plug off. It is wired into the loom at the ecu plug. I had to cut mine off to remove bits to sell my sr20. Just need to reconnect the wiper pigtail to the car loom. Same with the left wing indicator.

http://forums.240sxone.com/showthread.php?t=7091

skip to the post about F3 plug connections for lsx swap. Most of that was correct for my car.