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With a functioning resistor and stock glow plug relay wiring you will measure 24V at the relay until it is energized. The resistor will not develop a voltage drop without current flow. You have to measure the voltage at the relay when it is energized to see the voltage impressed on your glow...

The negative side of the back battery is connected to the 12V terminal block on the firewall by the glow plug relay. That is where the truck gets 12V for everything. The positive of the back battery is connected to the large terminal block on the firewall behind that battery. That is where...

I want to second this thought.

Mid 80's GM products says it all ......

Does your voltage gauge show a voltage reading when the key is in the off position? If you are draining fully charged batteries in just few hours that is a pretty serious drain. A quick work around is to install a battery cutout switch but that does not fix the problem it only buys you some...

I want one that works on more than just MVs.

Camo all the way baby. No mats, no carpet, no stereo, no A/C. Mine is a military truck and it is staying that way. My wife drives it just the way it is not to mention riding in it. She knows I love it and that makes her happy. That being said it is your truck, have fun with it. The...

A truck tailgate with a crank down window in the middle of it is a stinking stupid design. Then to make sure there is no doubt this is a stupid design the crank mechanism is made out of soft metal guaranteed to break after 100 operations.

Have you guys seen this video? M151 ENGINE FOUR CYLINDER OHV PART I (1962) M151 ENGINE FOUR CYLINDER OHV PART I : Department of Defense : Free Download & Streaming : Internet Archive

You were my inspiration. http://www.steelsoldiers.com/attachments/cucv/220335d1293904855-story-my-cucv-12v-glow-plug-conversion-wire-routing-800x600.jpg

http://www.steelsoldiers.com/cucv/66245-m1028-charging-issues.html#post799218 If you have 24V at one side of the lamp the other side needs a ground to have current flow. When the alternator is producing power the emf generated on the 'ground' side of the lamp stops current flow through the...

If you are tapping your under-dash starter relay to get it to work then it sounds like that is the problem. What voltage do you get on the coil when it starts versus the voltage showing when it does not start? Perhaps there is still an issue with insufficient voltage at the relay coil to pull...

The wait light is not operated by the glow plugs or a manual switch. It is controlled by the card. All the wait light does is tell the driver not to attempt to start the vehicle until some portion of the overall glow plug heating cycle has completed. When you go with a manual switch you...

My trailer chassis is marked M116A1E1 but I cannot seem to find any details on what makes an A1E1 different from anything else. The other side is marked M101A2. It does have an A2 bed and A2 surge break so am assuming that like the A2E1 a slightly greater weight rating is all that is...

My bet is on the fact that this relay grounds through the base. Remove the one lone coil lead and test continuity to ground with a meter to know for sure.

antennaclimber is selling new cards that work in CUCs with no modifications.

Not a U joint?

You should get full battery 1 voltage at the purple/w stripe. What is the battery 1 voltage right now? If you applied 12V to the purple/w stripe wire and have a good ground you should here the relay energize and since you have 24V on the red wire if the relay energizes you should have 24V on...

If by key on you mean in the 'start' position then you should have 12V on the purple/white stripe wire. If by key on you mean in the 'run' position then you should NOT have 12V on the purple/white stripe wire. What happens when you apply 12V to the starter relay terminal that has the...

Looks nice. I like the look of the OD with white star.