relays: how they work, how to test

[shogun]

For those of you who are just starting out, just remember that, generally, they allow a very small current to control a high current circuit. It's sort of like when you start a car engine. The mechanical effort it takes to turn the ignition key is nothing compared to the effort it would take to start it with a pull rope. Essentially, the relay allows one device to effortlessly control a much larger device.
Relays (http://www.bcae1.com/relays.htm)

[Goober]

Hi Shogun, newbie here, I'm tryin to post but keep getting error page popping up. Just got a 95' 525i and fixed the overheating problem thank to this site. I realize there is a lot to learn here. My wipers don't work, a/c clutch not engaging etc; I have read a lot and looked for relay locations and sizes for a/c, but can't find anything. I'll tackle the wiper linkage asap, they jerk about 1/2 inch at startup and engine off modes. I'm guessing the motor is good and linkage is trashed. They act like they want to sut off or go through their cycle...

[shogun]

Here you find the ETMs by built year, all relay positions are shown, there are also pics with component location views http://shark.armchair.mb.ca/~dave/BMW/e34/
Wiper linkage http://www.bmwforums.info/5-series-guides/483-replacing-e34-windscreen-wiper-linkage-pic-heavy.html
Copper wiper linkage you can buy from Taiwan http://www.hongmei.com.tw/?13,e34-wiper-connecting-rod-copper-bushing

https://www.youtube.com/watch?v=78nD_SlG4Ns

PS: Yes, I know, we have a software problem at the moment when posting, that always the error message comes: Database Error. Admin already has been informed. When you reply, go to "go Advanced", then it will work for the moment.