BMW E30 fuse box and relays
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Where can I find the descriptions of the E30's fuses and relays?
The descriptions and locations are in the car's owner's manual; at least the manuals of the 1988 and 1989 models have them. Not all models are exactly the same, so check the manual for your car's model year.
What do fuses 11 and 21 control in the E30?
Fuse 11 (7.5 A) in the 1988 model is the fuel transfer pump fuse; not all models have a separate transfer pump. Fuse 21 supplies the interior light, the glovebox and boot lights, the clock, the radio and the on-board computer.
Which relay is in which position in the E30 fuse box?
The white relay in position K8 is the fog light relay. The load-reduction relays are in positions K5 and K7. Positions K1 and K6 are empty, and they relate to the auxiliary radiator fan.
How is the fuse box of a pre-facelift E30 opened?
All the screws must be removed, and one of them is hidden under a relay. A relay that is stuck tight may need pliers to remove.
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