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$3.99 at the local O'Reilly's. While you have it unplugged to swap out, follow the wires as far as you can checking for breaks or open insulation.

Swap in the batteries, clean and check terminal wires along with the connections on the firewall bus. Then test again. Tell us what you have. It reads like a few loose connections or a bad voltage regulator on one or both alternators.

You can still slave start with the resistor by passed. CUCV electric has a great wiring manual John made up about the glow plug operation to go along with their glow plug card they sell. It brings up the other issue involved with a resistor bypass. The front battery gets worked very hard...

There is a pink wire at the top of the injection pump. Pull it off the IP and with your batteries charged and the key off, see if it has voltage. If it does, then your ignition switch on top of the steering column is either way out of alignment or broken. Either way, for a part that cost $12...

A/C, cruise control, radio and intermittent wipers are things you don't realize how nice they are until you get into a CUCV as your daily driver. The 6.2 was designed to have the same output as a 1980 2 barrel 305 V8 with twice the fuel mileage. If you can live with that, then power won't be...

I know this sounds like a lot of work, but reading the -20 manual on the front axle, pulling the hubs and putting in new boots is something that will have to be done sooner or later anyway. Do it now before you tear up more parts. Are you sure the noise is coming from the front and not just...

Yep, just buy a few dozen Packard fittings and the crimping tool. A roll of the correct wire and some blank wire number wraps will make any electrical problem on the truck a breeze for years to come. These things are super simple wiring. A few minutes with a diagram from the -20 manual and...

That depends on how much money he earns doing odd jobs and such. 2 years to go. I thought you would like the color coded shrink wrap.

Axle vents? You mean those little things on top that are supposed to pop up to let air out and close down to keep water out? How many people on here have actually checked them the way the manual says to more than once since they bought their truck? Even if they work correctly think of the...

We had some time to mess with the alternators today. The ALT 1 light comes on and goes off when the engine fires up. However, no charging happens at BAT 1. ALT 2 has voltage at the light on the dash, the bulb is good, but the light never comes on. BAT 2 gets charged though. We pulled the...

Besides the mentioned air intakes. Anytime you get brakes, wheel bearings, axles and such under water. They will need to be taken apart, cleaned, lubed and put back together. If you have to go through say 20 inches of water, you will get water in your axles. So, if you plan to go through...

I drove by there last month and they were gone. That area is a boom town now. Shale oil production. I am sure any that are left have doubled in price.

Listen at your exhaust too. My M1009 had an idle that felt and sounded like a gas engine with timing advanced waaay to much. The exhaust note was never constant from either side. I did the injector line check, all good. I did the temp check and all were within a few degrees of each other. I...

The clean and easy way is to use a infrared non contact thermometer. You will find most of the cylinders are pretty darn close to the same temp. Of course, the ones closest to the cooling fan will be a bit cooler than the ones near the firewall. The messy way that will leave no doubt in your...

Glad you had a good recovery Scott. You are going to make a special trip and bring some of that sausage to Temple next May, right?

I agree. Wiccantoy, please spell actual words and take the advice given above. You have a huge draw on your electrical system and need to figure out what it is. The electrical troubleshooting section of the -20 manual walks you through how to do that if you don't want to follow the advice in...

Blue smoke out the exhaust pipes while cranking means fuel but no heat. Are you getting any smoke at while during your extended cranks? If you are getting smoke, glow plugs are your problem still. By the way, if you are cranking more than 10 seconds at a time and not letting the starter cool...

They are just a 28 year old Chevy truck with a little different wiring added. Oh, if you get below 0° in the winter, a block heater would be a good idea. Lots of threads about that subject. I have had mine down to 17° and it fired up like normal.

Welcome to the fun of green iron. It sounds like your truck is working like it should. The 6.2 needs glow plugs to start anytime the engine is below around 130°. So, year around operation of the plugs is normal. There are some great manuals the military made to go along with the trucks. If...

I am trying to write this sound it doesn't sound like a threat or mean. Please read it that way. The people on this site for the most part learn to use the stock system, the military manuals were made a huge expense to help you fix the stock system and most of the comments on this site will be...