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Old 01-07-2022, 11:54 PM   #1
Bigbertha72
 
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Default 86.5 wiring issues / few fuses no power to

Working on 86.5 4cyl d21 2wd truck.

It's got some electrical gremlins that I've been fixing.

The main issue I'm having is no power to the white/blue wires that feed some fuses.

I forget the fuse # buts it's the top right and top and bottom lefts.

I think it was #10. When I provide power to it everything starts and works and runs.

I haven't been able to find a diagram.that shows where thr power is supposed to be feed from.
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Old 01-08-2022, 12:25 AM   #2
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My paper manual for the 86.5 is in storage due to my move, but check the fusible links at the battery and see if they looked burned.
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Old 01-08-2022, 02:07 AM   #3
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Welcome to IN...

The PDF FSM is in my Sig. v v v Please DL it, it will serve you well.
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Quote:
Originally Posted by Deerhurst
What he is saying is the aerodynamics of a D21 is a brick in the wind.
Probably at least as bad as a Jeep so worse than a cow.
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Old 01-08-2022, 02:52 AM   #4
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I checked the fusible links on the firewall. Don't see any at the battery.
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Old 01-08-2022, 02:54 AM   #5
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Quote:
Originally Posted by 89'HBV6 View Post
Welcome to IN...

The PDF FSM is in my Sig. v v v Please DL it, it will serve you well.
I didn't see a 86.5 anywhere in that list. Am I overlooking it?
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Old 01-08-2022, 03:17 AM   #6
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Nope, it's not there. Get the 88' FSM. There were some differences, but we can guide you, as needed... there are sum smarties here. <g> (o:


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Quote:
Originally Posted by Deerhurst
What he is saying is the aerodynamics of a D21 is a brick in the wind.
Probably at least as bad as a Jeep so worse than a cow.
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Old 01-08-2022, 03:35 PM   #7
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Use a DC test light or DC voltmeter/multimeter and start at the positive terminal at the battery, continue on that circuit until you find that the positive voltage isn't there.




Quote:
Originally Posted by Bigbertha72 View Post
The main issue I'm having is no power to the white/blue wires that feed some fuses.

Does your truck have several large fuses just rear of the battery??? If so, check those.
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Old 01-08-2022, 04:47 PM   #8
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Make sure the clips inside the fuse box have not spread too far apart. I had one terminal do that and it caused intermittent connectivity.
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Old 01-08-2022, 10:30 PM   #9
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Quote:
Originally Posted by cadillacdude1975 View Post
Make sure the clips inside the fuse box have not spread too far apart. I had one terminal do that and it caused intermittent connectivity.
I had that happen, too. It was hard to diagnose.
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Old 01-08-2022, 10:40 PM   #10
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Finally traced it down

Someone had pulled the acc relay in the fusebox on the cab.

But the starter wouldn't always work. Started tracing back and found the pin in the gray connector behind the battery were spread apart. Closed them up and all good now

Thanks for the help
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