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GP Sensor Attached is a graph of the WT3000 sensor resistance vs temperature. As you can see, if the temperature increases, the resistance decreases. So if you disconnect the temp sensor, the resistance is high to the glow plug card. This will cause the GP card to "think" that it's cold...

Leonards Fresh Paint Leonard received a fresh coat of CARC last weekend. Karl

Exactly why I have a fuse right next to the front battery to feed the rear bus bar. Karl

I use it to provide power to radio equipment, wiring the radio equipment directly to the rear bus bar. Each piece of equipment is individually fused for protection at the bus bar. Eventually I plan to install a 12VDC to 120VAC inverter. Once you have a good source of power to the rear, you...

http://www.steelsoldiers.com/showthread.php?95803-M1009-Rear-power-24v-to-12v-modification&highlight=bus

Best bet is a Motorola 2135 key. Almost all of the Motorola mobiles used this key. If it's an older radio, it might be a CH751. Maybe a 2553, but they were usually used on the base station cabinets. Your local Motorola shop should have them. Karl

Bill indeed touched the lives of many in a very positive way. His smile and kindness will always be remembered. He worked for a small company making antennas, I still have one of them in a box. When the day comes to install it, I will remember the great man that made it. Thanks Bill, Rest In...

I'm planning on coming down. Might be two of us. Karl

http://www.murcal.com/Catalog/Metal-DC-Contactor-Family/974-1215-011-09 These appear to be a good relay. Karl

Do you have a test light? Turn the key to the run position and see if you have voltage at the bottom side of the relay that connects to the glow plugs. Karl

Sounds like the front battery went or you lost a cable/connection between batteries. A total failure is usually easier to find the problem than an intermittent one. Your portable volt meter will be your best weapon to find the point of failure. Karl

Start by checking the battery voltage on the front and rear batteries. Load test each battery. Check and clean all battery connections as well. Between the batteries, the positive and negative bus bars on the fire wall and all ground connections to the vehicle. Report back with your results. Karl

I went through the same issues that you are experiencing. Long story short, the new fuel pump (from NAPA) was defective out of the box. Installed a different pump and it started right up. Karl

Good advice.

Recently my M1009 was doing the same thing. At idle I could hear a noise and detect a slight vibration. Went away when I increased engine RPM. Crawled under the front of the engine and found a missing nut on the power steering pump bracket. Installed new nut and tightened all the mounting...

Just to clarify ; The RED LED (on my GP card) indicates that the card is providing the ground output to close the relay. It does not indicate that the relay has actually closed. It is there to indicate that the card is functioning. And I agree with the others advice; clean all of the electrical...

I purchased 3 of these relays from Murcal along with a DC voltmeter. Installed the voltmeter next to the factory 24v meter. The voltmeter monitors the output of the GP relay via the Orange wire to the GP card. After the GP relay opens the voltmeter automatically switches to monitoring the 12v...

One of mine has a seat belt buzzer, lasts almost as long as the wait light.

I have purchased weatherstripping from these people. Very pleased with the products. I have not compared their prices with LMC. http://www.classicparts.com/Weatherstrip/departments/332/ Karl

You should check and verify that the glow plug system is working properly.