Post by dave1800 on Oct 8, 2013 1:34:50 GMT
Just to be 100% clear, are you saying the motor turned the right way even if you reversed the wires? I assumed it was a straight forward DC motor that would simply reverse direction? I have no explanation why you get the running on and the ignition warning light glowing other than the fan keeps rotating and the motor acts as a generator for a few seconds. But it would need to bypass the ignition switch somehow I cannot fathom. Perhaps when you mounted the new motor you did not connect the fan so the motor stopped faster - grasping at now existent straws 
. It looks as though the laws of physics may not apply under the Northern Lights!
regards
David
Hi again! No anti run on device or anything..
I've done some research, on a spare heater/ fan assembly. Here are the results:
Two wires enter the assembly, on top rh side. One black which goes to earthing point behind the dash. The other, green, is supply, from which comes from fuse A3 A4, via the voltage stabiliser.
The black runs straight through the assembly, to the lever switch. The green goes into the motor and out of the motor comes a green/yellow. This one goes to the lever switch too. So, current enters motor via green wire, runs out of motor to switch via green/ yellow wire, then when switch is on the current goes via the switch and black wire to the earth point.
Interesting bit was, the spare motor ran the correct way when connected to a battery, also when reversing the wires (+- earth). The direction of the motor is marked with an arrow...
I actually pulled the whole damn thing into the car and connected it to the car's green supply and black earth wires. It ran the correct way, and the car did not run on when stopping while this spare heater motor was running, by the car's wires.
So, conclusion I guess, the fault is in the heater motor. FUnny it has happened to both my cars then..
Regards, T
. It looks as though the laws of physics may not apply under the Northern Lights!regards
David
I've done some research, on a spare heater/ fan assembly. Here are the results:
Two wires enter the assembly, on top rh side. One black which goes to earthing point behind the dash. The other, green, is supply, from which comes from fuse A3 A4, via the voltage stabiliser.
The black runs straight through the assembly, to the lever switch. The green goes into the motor and out of the motor comes a green/yellow. This one goes to the lever switch too. So, current enters motor via green wire, runs out of motor to switch via green/ yellow wire, then when switch is on the current goes via the switch and black wire to the earth point.
Interesting bit was, the spare motor ran the correct way when connected to a battery, also when reversing the wires (+- earth). The direction of the motor is marked with an arrow...
I actually pulled the whole damn thing into the car and connected it to the car's green supply and black earth wires. It ran the correct way, and the car did not run on when stopping while this spare heater motor was running, by the car's wires.
So, conclusion I guess, the fault is in the heater motor. FUnny it has happened to both my cars then..
Regards, T
