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N3135 bought from reputable vendor like 86humV or RWH or HPG I might avoid a specific vendor on EPay who claims OEM but they are really chicom knockoffs. Golfer or Wolf Man or some such...

Eric aka Hummer H1 rips those anlternators out and welds in mounts for off the shelf GM alternators. He has almost 300,000 miles on one of those conversions.

My humble advice… Temporarily use two wires to bypass and power up tranny to see if that helps. Then you will know if you can drive. After that fiddle with and or trace wires and replace the power breakers.

Even with bad glow plugs, that light would light up assuming it’s functional. The implication is either the light is bad, or Mogman is correct stating that the protective control box versus EESS Smart box is no longer properly functioning.

Mogman, you post that TM so often that you need to include that transmission TM in your signature line. 😉

Awesome

At roughly 2700 RPM I have a screaming pulley. I’m hoping it is not the Whipple. Stay tuned. 1995 GM 6.5 NA block.

Once you interrupt the energy flow in a set of batteries connected in series, you have essentially disconnected the circuit. Just disconnecting the connection between the two batteries, if done carefully and correctly, will remove power from the circuit. When you play with electrics on a HMMWV...

Disconnect the batteries prior to fixing the starter and its switch, or you will blow the glow plug controller and you’ll be calling me about a “Genius Box”. Before doing any and all electrical work on your truck you MUST MUST MUST disconnect the batteries, or else you’ll blow the PCB/EESS also...

1) read the TM’s (technical manuals) that are provided for free above 2) update/upgrade to the new starter bracket. The starters are heavy and the new style bracket makes life easier. 3) extract the old broken starter bolt and use 2 brand new starter bolts. Kascar and Hummer Parts Guy and...

Posting plans of that for us steel working and welding guys with dimensions would be awesome!!!!!

Your fuel lift pump is suspect. Fill the tank to full and if the problem improves, that might be it. The injection pump can provide some suction but uphill it will fail when the fuel pump is bad. A full tank provided pressure to push fuel to the injection pump. A half tank won’t. Also make...

Air is compressible. All gasses are. Air just liquifies at the wrong temp and pressure to be as efficient for a car compressor. When air gets into the system, the compressor won’t be able to liquify the mixture properly, so the system won’t work efficiently. When your system let go, air got...

Your vehicle was the slowest on the road, and your speedometer cable is what you’re blaming? I guess if that’s your story, you can go with it. 😝

Fastest and least damaging… drill out flat side other side. Annoying but simple. Other method would have been tack weld a bolt to other side and use ratchets both sides. not enough room for a cutoff wheel and Dremmel just too small. Thanks guys!

Darned buckets rotted. Worse, bushings are breaking and end nuts are frozen. Anyone know the best procedure for removing the frozen nuts from the hood? Or do I need to drill out/brute strength them?

Been busy. Had a hot second today to make a small change, but it’s the little things that make all the difference. Rusted lug nuts going away. New black ones from Amazon installed. Cleaned up the wheels nicely. Old bolts will get muriotic acid and black paint and will be recycled onto the M1025.

Double that amperage when selecting wires and relays and switches.

You should PM HummerH1

I’ve read the title of this thread three times, and I still think it could have been written by Bob Guccione. Tap power from batteries and use a relay. My strong suggestion.