M1031 dead: where do I start?

[DrJekl]

86 M1031 in good shape. Good batteries, no wires look burned, everything is hoked up, good starter relay inside, no fuses popped. Turn on the key, no power (no buxxer, no wait light, no water in fuel, turn the key and no starter). Where do I start looking for trouble?

Thanks!

 

[hovenga67]

I would check on the firewall where all the power connects. Do you have a test light to see of you have any power in the fuse box? If you don't you need to start tracing it back. Could be bad fusible link or broken wire. I can't remeber if the fuse box draws off the starter or firewall.
Brent

 

[WillWagner]

Use a DVOM and check grounds. You got lights?

 

[DrJekl]

No lights, nothing. She is dead as a door nail.

 

[ken]

To test if the fuseable link is burnt. Run a 10gauge wire. And NO LESS than a 10 gauge! From the 12v positive side of the first battery, (The one closest to the head light) to the power out post on the first alternator. Everything should come on. If not then you have a bad ground. Make sure the ground strap from the firewall to the engine is secure. And the ground from the headlight harness to the body is secure. It's by the passenger side headlight. Good luck.

 

[Barrman]

Clean your battery terminals too and make sure they are clean.

 

[Boreal21]

Clean your battery terminals too and make sure they are clean.

9 times out of 10 that solved my electrical problems on my M1008

 

[stump]

check the fusible links. give them a slight tug and if they fall apart replace them. also use a test light on the battery conections not the centers make sure the clamps are clean. battery voltage goes from the batteries to the starter then from the starter to the fusible links to everything else. start at batteries and go from their.

 

[beanman1]

To test if the fuseable link is burnt. Run a 10gauge wire. And NO LESS than a 10 gauge! From the 12v positive side of the first battery, (The one closest to the head light) to the power out post on the first alternator. Everything should come on. If not then you have a bad ground. Make sure the ground strap from the firewall to the engine is secure. And the ground from the headlight harness to the body is secure. It's by the passenger side headlight. Good luck.

the 12v power come off the negative terminal of the second battery to a junction block with 2 posts on it in the very center of the firewall and then i would run the 10 gauge wire to that before i would the alternator

 

[ken]

Beanman. That it where the fuseable link is. The part he needs to test. If that link is burnt. Then running the wire there won't tell him much. The alt power out wire will put power to the harness. I wouldn't run it this way. Just use it for a test. If this is his problem. Then he would need to fix the bad link.

 

[beanman1]

srry ken i miss understood the post srry for that you were right i had a brain fart happens all the time

 

[Crash_AF]

Check for 12V at the two terminal diamond shaped block just above the master cylinder. If you don't have 12V there, trace the wire that runs across the firewall to the negative battery terminal on the rear battery. Either that fusible link is blown or the wire is broken.

Later,
Joe

 

[DrJekl]

Not grounded. Installed a ground strap and she fired right up.

 

[Crash_AF]

LOL, that'll do it...

Later,
Joe