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MMZ_TimeLord · 10-30-2003, 02:03 PM

Wang,

Actually according to this reference... the RED and BLACK wires are +5VDC and Ground respectively and the YELLOW and BLACK wires are +12VDC and Ground respectively.

Reference...

I have a feeling the ground is the chassis of the motor... try the yellow wire on one of the blue wires... and the black on the chassis strap of the motor. It should spin.

If the 1974 corolla had a two speed fan on the core the two blue wires could very well be straight through and resisted so that you already get that speed drop.

Try each of the blue wires with the yellow and the chassis strap.

Hope that helps... if you are unsure, get a meter and check it.

10-30-2003, 02:03 PM	#18
MMZ_TimeLord Cooling Savant Join Date: Apr 2003 Location: San Mateo, CA, USA, Earth Posts: 433	Wang, Actually according to this reference... the RED and BLACK wires are +5VDC and Ground respectively and the YELLOW and BLACK wires are +12VDC and Ground respectively. Reference... I have a feeling the ground is the chassis of the motor... try the yellow wire on one of the blue wires... and the black on the chassis strap of the motor. It should spin. If the 1974 corolla had a two speed fan on the core the two blue wires could very well be straight through and resisted so that you already get that speed drop. Try each of the blue wires with the yellow and the chassis strap. Hope that helps... if you are unsure, get a meter and check it. __________________ MMZ>TimeLord "Oooooooooh... that's gonna leave a mark!" Last edited by MMZ_TimeLord; 10-30-2003 at 02:11 PM.