Dummy light.
Dummy light. Anybody see any reason why I couldn't wire up the fan control, off the ecm, to the dummy light on the dash of my Chevelle. I'm an runnin a flex-a-lite black magic fan and it is all self contained as far as temp control goes. Also would I need a relay or would the the ecm be able to support a bulb or led, I haven't decided which yet but if it makes a difference I could go one way or the other. Thanks.
Why do you want to do this? You want a light to come on on the dash when the fan is supposed to come on? I think that would be annoying. But to answer your question, as long as the light bulb didn't draw any more current than the relay would, I would think you would be ok, but if in doubt, just wire the relay to turn on the light. An LED should work with out the relay as they draw very little power.
Are your trying to get the light to turn on at some temp?..
Why not just find or use the oem sender to ground out the 12v light, would just have to find one with the correct ohm range. ? just a thought.
That is what I did for my Oil light. have a pressure gauge and the idiot light for oil pressure.
Why not just find or use the oem sender to ground out the 12v light, would just have to find one with the correct ohm range. ? just a thought.
That is what I did for my Oil light. have a pressure gauge and the idiot light for oil pressure.
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
That should work just fine. Just remember that the PCM puts out a ground signal so you may have to run a relay depending on how the other side of the dummy light is wired.
Are your trying to get the light to turn on at some temp?..
Why not just find or use the oem sender to ground out the 12v light, would just have to find one with the correct ohm range. ? just a thought.
That is what I did for my Oil light. have a pressure gauge and the idiot light for oil pressure.
Why not just find or use the oem sender to ground out the 12v light, would just have to find one with the correct ohm range. ? just a thought.
That is what I did for my Oil light. have a pressure gauge and the idiot light for oil pressure.
