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Matty104

E30 aux fan wiring

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We all ran our own wiring to battery / igniton and used a relay.

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We all ran our own wiring to battery / igniton and used a relay.

Fair enough, does anyone know if theres a High and Low temp sensor on the m10b18's, just so i can utilise the two speeds of the fan?

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Yeah it most likely will. The sensor will have 3 pins, 1 for power, 1 for low speed and other for high speed.

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Hmmm it has three sensors that appear to be water temp, theres the one with only one pin that afaik is for the dash gauge, and theres 2 twin pin sensors, guessing im screwed as to which is high temp without a thermometer to check them at temperatures? or just guess and see which one turns the fan on at 91deg?

Sorry for all the questions

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just run the high speed and leave the low speed disconnected... this is what i did. doesnt cause any problems.

i suspect one of th 2 2pin sensors is a temp switch not a temp sensor. and just wire in like has been discussed and just use the high speed wire.

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yeah was just keen on the two speed, dont really like having the noise going constantly, but well see, cheers for the help guys.

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