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First rule of owning an MV: Never trust the fuel gauge.

The ground wire is indeed an add-on. Woodsplinter is correct that the instrument cluster uses the locking screws to provide the ground. Anytime you can add an additional ground is a good thing.

Read this thread http://www.steelsoldiers.com/showthread.php?60958-CUCV-Alternator-Isolated-Ground-Therory-of-Operation

Thanks for the update. Lets us know when you are home.

You can't just install a 24v alternator and then draw the majority of the 12v electrical needs off of one battery. That creates an imbalance in the system. The alternator will charge the 12v front battery and overcharge (cook) the rear battery that needs no charging. While it may seem like GM...

While either bulb will work the difference is in the brightness (heat) of the bulb. The 194 bulb is 3w and goes in the 24v GEN2 circuit. The 168 is a 5w bulb and goes in the 12v GEN1 and other lights. If you install the 168 5w bulb in the GEN2 socket it will burn almost twice as bright and get...

One is a 194 and the other is a 168. Different wattages for the different voltages. I'll have to look at my notes to tell you which one is which. The parts manual has them listed.

He is on a recovery from Ft Leonard wood MO. Heading back to the NE corner of Oklahoma.

If the vent line is plugged and the pump is causing a suction, just loosen the cap and see it it will run.

Or a blown fusible link from the GEN2 at the 24v buss bar

Marines don't need no stinkin heat.

The government can even come get the truck anytime they want.

He needs one that will send an electrical signal not a vacuum signal. I wonder if the 1991-1993 diesel tps would work.

Have you decided on what tires you are going to run?

Used for the vacuum pump only. Send the vacuum signal to the modulator. Not useful for anything except the TH400 or a TH350 You will need a controller and maybe a remote mount TPS. The 1991-1993 diesels with the 4L80 may use a IP mounted TPS. I'll have to check the on I have in storage.

Welcome to the site. Read the two threads at the bottom of the page for a recap of previous events. http://www.steelsoldiers.com/showthread.php?67262-4th-Semi-Annual-Texas-MV-Rally http://www.steelsoldiers.com/showthread.php?77931-5th-Semi-Annual-Texas-Military-Vehicle-Rally

I also received a Christmas card. The last PM I had from him was on Jan 25th. He is still having some issues but was doing okay.

The non-working voltmeter could mean there is an issue with the GEN2 charging system. Check the very bottom fuse. If it is bad the meter won't work.

You can check each battery by itself. Just attach the meter to the leads to the individual terminals. This will give you the output of each alternator. read the stickies to get a better understanding of how the system works.

Before any electrical testing make sure your batteries are fully charged and load tested. I have seen new batteries that where DOA on the shelf. Never assume. Verify. What is the voltage reading at the battery? You may have a bad connection that is not allowing the alternator to reach the...