Can't find which circuit breaker is for the windows, in my 1990 bmw 525i
Have you found the fuse box, under the bonnet on LHS of vehicle?
In the lid of the fuse box it will outline which fuse controls the function.
SOURCE: 1993 bmw 525i fuel pump
Hi, your fuel pump is located in the trunk underneath an access cover on the passenger side. remove the screws on the cover and you will see the in tank pump and sending unit. when replacing your pump, make sure to note the position of the 2 fuel hoses so you don't accidentally cross them when putting in the new pump.
SOURCE: 1990 525i bmw headlights
Check the wiring in the lights it may be poor construction or mis care that has madr a wire become looseand only rarely turn on
SOURCE: Windows are not working
Chances are it is not a relay but a dirty switch. When the switches on these cars get dirty they will either only work sometimes or not at all. You can take apart the switches and clean them I do not recommend this unless you have experience doing this as there is a lot of small parts. Your best bet would be to pick up a few new switches and see if that resolves the issue. If it does not then you have an electrical issue. There is NO replay under the dash for the windows. The relay for the windows is located under the rear seat and is call the A-1 general module. It is a green rectangular box located, again, under the rear seat on the drivers side. If a new switch doesn't resolve the problem and new A-1 GM will
SOURCE: prices for bumper, headlights, signals for a 1990 bmw 525i
or you can go to ebay germany type in bmw e34. SCHEINWERFER and Frontschürzethey should be what your after
SOURCE: my 1995 bmw 525i passenger window stopped working
Verify the wires that run to the trunk, after many opeing and closing the wires wear, you may have short. There are many post in some BMW club forums.
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hope this helps...
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