Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

what is this wire to?

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Old 04-24-2018, 06:41 PM
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what is this wire to?

I'm referring to the one with the fat connector running over the blower motor. I found it today when looking for a reason why my fan doesn't blow as fast as it should the other picture shows the end of the wire that was just dangling in the corner behind the blower motor.
Attached Thumbnails what is this wire to?-img_20180424_182801.jpg   what is this wire to?-img_20180424_182813.jpg  
Old 04-24-2018, 06:47 PM
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Re: what is this wire to?

First pic looks like Underhood light
Old 04-24-2018, 06:50 PM
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Re: what is this wire to?

OH! ok! that makes sense I have a fiberglass hood. Thank you very much!
Old 04-24-2018, 06:52 PM
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Re: what is this wire to?

the other pic is the other end of the wire


I was on a thread that said there was a connector that got burned up on a red wire that ran across the firewall. That is what I really wanted to check on. All my fan speeds run but high is not as fast as it should be.
Old 04-24-2018, 06:52 PM
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Re: what is this wire to?

Both are actually. The black connector is sometimes used closer to the light assembly.

The factory "SMC" fiberglass Z28 hoods used in 82-83 use a different light assembly. Instead of grounding through the hood, they have a ground wire that follows the power wire back down the hood hinge.
Old 04-24-2018, 07:07 PM
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Re: what is this wire to?

Originally Posted by The Big Hat
the other pic is the other end of the wire


I was on a thread that said there was a connector that got burned up on a red wire that ran across the firewall. That is what I really wanted to check on. All my fan speeds run but high is not as fast as it should be.
My fans high speed also doesn't run as high as it should.
Old 04-24-2018, 07:11 PM
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Re: what is this wire to?

The fan might be old. High is direct 12v without going through the resistors.
It does get controlled bye the fan relay.


Last edited by Tuned Performance; 04-24-2018 at 07:15 PM.
Old 04-26-2018, 08:21 PM
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Re: what is this wire to?

I had a mechanic argue with me today about this claiming that high still went through a resistor but it's all over that no it's a straight 12v connection. I have had the fan replaced. Is it possible that I have the wrong fan?
Old 04-26-2018, 08:49 PM
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Re: what is this wire to?

You can check voltage before and after the relay.
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