hot wire
Need Hot wire for tach?
Tuned
Joined: Oct 2003
Posts: 446
Likes: 4
From: Grayling, MI
You should use a hot wire that is powered only when the key is in the run position. By the way you stated in your post I think you alreadt knew that. Anyway, you can pull a hot from the fuse panel or almost anyother wire that in powered when the key is on. Start checking around with a test light. You should be able to find something. I think the radio might work, but it would be on in the acceaaory position, too. Maybe the wiper circuit.
Steve
Steve
Postmaster
Joined: Feb 2003
Posts: 4,043
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If you were to pull the dash cover there's a yellow connector with three female bayonette plugs that has keyed 12V available. You could plug right into that and not have to butcher or splice into anything.
This article:
https://www.ford-trucks.com/article/...rd_pickup.html
Second picture, middle of picture, red wire from wiper control is plugged into it.
This article:
https://www.ford-trucks.com/article/...rd_pickup.html
Second picture, middle of picture, red wire from wiper control is plugged into it.
Last edited by 76supercab2; Jan 30, 2007 at 08:55 AM.
More Turbo
Joined: Apr 2004
Posts: 736
Likes: 3
From: South East, Michigan
Originally Posted by 76supercab2
If you were to pull the dash cover there's a yellow connector with three female bayonette plugs that has keyed 12V available. You could plug right into that and not have to butcher or splice into anything.
This article:
https://www.ford-trucks.com/article/...rd_pickup.html
Second picture, middle of picture, red wire from wiper control is plugged into it.
This article:
https://www.ford-trucks.com/article/...rd_pickup.html
Second picture, middle of picture, red wire from wiper control is plugged into it.
Last edited by 77460f150; Jan 30, 2007 at 09:47 AM.
More Turbo
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I also ran my tach wire to the yellow plug , good invention from ford , wish I had known about it ten years ago . Also ran my 15" fan . That way when key is off power to fan and tach are off . No drained battery . KFLORD77
Postmaster
Joined: Aug 2005
Posts: 2,760
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From: Gadsden Purchase
Originally Posted by scottie2hottie
I have both of mine wired into my radio fuse, but I don't have a radio in either of those trucks. :-D
I ordered my pickup without a radio and used that empty connector to fire up the aftermarket Dana speed control I installed in '76. :) It's still in there and working good.
That was back when Sears actually sold good stuff. ;)
Alvin in AZ