auxiliary fan switch!!

[jonc39a]

can somebody tell me what order the fan switch plugs should be in from left to right( green/black, brown/black, black ). i have a 89 325is with the 3 prong connector and it broke before i bought the car. just let me know or take a picture, so i know its the wiring and not the switch. thanks.

[thereisnoyun]

I need to know too, Im just too lazy to look at the other e30 I have. If I get to it before someone else finds it, I'll post it for ya.

[romeomike]

Here you go

The male pins are on the dual temp switch in a triangular configuration. The male connector's plastic shell has a curved edge, a flat edge, and an inwardly-notched edge.

1
2 3
The curved edge is on the side of pins 1 and 2, the flat edge on pins 2 and 3, and the notched edge with pins 1 and 3.

Pin 1 -- green/black wire
Pin 2 -- black wire
Pin 3 -- black/brown wire

[kalib0y]

The male pins are on the dual temp switch in a triangular configuration. The male connector's plastic shell has a curved edge, a flat edge, and an inwardly-notched edge.

1
2 3
The curved edge is on the side of pins 1 and 2, the flat edge on pins 2 and 3, and the notched edge with pins 1 and 3.

Pin 1 -- green/black wire
Pin 2 -- black wire
Pin 3 -- brown/black wire

Thread revival but I have a question
What are the definitions of each wire?
which one turns the fan on at the lower temperature and which one is the ground?

thanks

[romeomike]

Hi:

Check out page 6454-0 in the ETM for the full picture. Green/black is the power wire, black energizes the K1 normal speed relay, while black/brown energizes the K5 high speed relay. Black and black/brown ground to G200 (under the dash in the vicinity of the steering column).

Pressing the A/C switch will also energize the K1 relay and cause the aux fan to turn at its lower speed.

Adios for now,

RM