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Was your PCB damaged? That will kill a HMMWV that was not battery disconnected prior to electric work. MHO

Starting to dissect and rebuild my HMMWV PCB. I want to find male and female plugs to cut into and attach waterproof to the PCB box. I want remote switches and pushbuttons that will support 24V and 20amp, with 8 guage wire. I want to place watertight plugs on the side of the PCB box, and run low...

Amazing post AND seems to confirm my suspicions about function AND bypass! Many thanks!

Essentially, the more I dissect the more interesting this thing gets. Essentially the PCB is a decision engine. If glowplugs are OK, a decision is made to power them up. If they power up properly, a decision is made to allow the starter solenoid to engage. At the same time a decision is made...

Maybe others will weigh in also. Until then, search is your friend. Search "Swap" and 4L80

Unlikely turbo will fit... IIRC only the van engines with turbos fit. Posters here state 4L80 is a difficult swap. There is a ton and a half of postings about it on this site, so "Search" is your friend. If the Suburban has a 700R4 you're in better luck, IMHO.( I have no idea what trannies...

I'm beginning to think I also need an old Prestolyte box for evaluation. Is there a vendor here with one? EDIT - Found a dead one and bought it. More would be better to compare live and dead parts.

So how do we get the schematic diagrams AND integrated circuit board pics from the manufacturers? Where do we get the military technical specs for how a PCB is supposed to operate? Is this a "Freedom of Information" thing OR is there a department within the DoD we can write to? Will the...

NormB alludes to an interesting issue. A number of years ago Optima moved manufacture abroad. Quality suffered, and that is the reason I spoke about them not being my favorites. Odyssey is my favorite right now but they are pricey. They are small with huge cranking amps. They are solid state...

And how do we purchase one? Your website does not contain purchase information, assuming it is the same site connected to your profile.

Interesting... I will try today.

Amazes me. Oxidation and a potential galvanic reaction that has fused a hinge is not uncommon. Any dilute acid can help with this. Muriotic is cheap and effective when diluted. We used it every day at the auto shoppe. Dilution is a common thing, as it separates things like store bought vinegar...

Wish this thread would lose its legs. We're in a country where they took the rings off of Red Fox's fingers and jailed Wesley snipes for taxes. Martha Stewart went to jail. That Real Housewive's husband was deported to Italy. OF COURSE Uncle Sam can take them back, but it is exceedingly rare...

1) EDIT - looks like the fuel level sensor [fuel sending unit] was removed. EDIT 86HUMMWV posted to a thread in 2017 that the part number is 12339199, and if you search for military and 12339199 on Fleabay you will find what you need. I just found 2 for sale, old and new style sending units...

Been driving her and under 30 I'm ok but over thirty and on bumpy roads she is a bronking buck. I have yet to install the Centromatics. Tie rod ends and ball joints all have play and need replacement. Not sure yet about shocks, but they seem ok when I apply weight and let off . ( ie.: She does...

Is that you on "The Auction Site"? If so I will buy one. I had no idea who made them or if anyone stood behind them. Seems like we can convert back to push start with your box.

Stolen from G5o3 and "Fenris" Many thanks to the poster and the forum there. Engine Harness Pin A: (output) Feeds fuel injector solenoid, Pin 6 of glow plug controller, Fan temperature switch, Time delay/Engine clutch solenoid Pin B: (input) Pin 3 of glow plug controller (temperature...

There are always ways to secure a vehicle, and ways others will try to liberate said vehicle. 1) I agree with battery cut out. 2) PCB box is essential, so cut out switches to essential wires can hobble the HUMMWV. BE CAREFULL! Some wires are live and cutting them with a switch while connected...

I think as an American, knowing these vehicles are sold to the American public with the caveat that they are not for export, we are understandably cautious. I think export is best left to people like Hummermark in the UK, who are not bound to these regulations. Maybe it is legal... Maybe not...

Well said