Window wipers dont work on my 97 740il bmw - 1997 BMW 7 Series

You probably blew a fuse of knocked out a wiring harness during the install. Check the fuses first, if you don't see anything blown pull the radio back out and be sure all the wiring harnesses in the area near the radio are secure.

sounds like your wiper motor is bad.

Here is a thread I found that has a few suggestions that appear relevant:

http://www.bimmerfest.com/forums/showthread.php?t=533112

If you find a solution there post it here for the next BMW owner with the same issue!

In the trunk there is a few links to check and fuses, in the right rear where the battery is check for blown fuses or links also make sure the battery is good, why jump starting? also check in the left rear of the engine compartment and check fuses there, this sounds like the cables may have been hooked wrong.

I HAD THE SAME PROBLEM, AND IT TURNED OUT TO BE THE WIPER RELAY , LOCATED UNDER THE FRONT WINDSHEILD IN ENGINE BAY, REPLACE THE RELAY.

geez! you got a winner. fuse(s) or computer. or ABS computer. $1500 btw.

I had the same problem. I thought it was an issue with a blown fuse, but also noticed that the rear wiper was very stiff.
I solved it by opening the rear window (so the wiper is not clicked into the motor) then squirt some WD40 into the wiper mechanism (I put the oil in from the outside). Gently move the wiper from side to side until it starts to free up - after a couple of movements the wiper should be moving freely again. No issues since.

At the same time, check that the washer jet is correctly angled. Mine was squirting directly into the wiper which may have caused it to rust up a bit.

Have relay check and replaced if needed. If that dont cure it then it sounds like that there might be a short somewhere.

I have the same problem - Drivers door windows wing mirrors and drivers door lock not working also air bag light on. The car has been to a BMW specialist for over a week as the drivers door dead locked.
The mechanic used his diagnostic gadget which showed a problem with the drivers door. All other doors windows locks work except drivers door. Has check the power supply to the drivers door switch all ok. Is the problem with this internal window control switch and how does this affect the drivers door lock?
Please Please help

try checking for a short to power on ur 12 volt comming into motor also check for a good ground at the plug for ur wiper motor