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I agree with you 100 % , I have been scouring the internet looking for something or someone who has already done it ! Diesel mechanic I know tells me , he doesn't know of any other vehicle that uses that system or box , I have a cummins diesel that has an intake air prewarmer with no glow plugs...

Will do !! I need a wiring diagram for the m998,, I have a couple of service manual's but there are no wiring diagrams. Started buzzing out wires for continuity to see what goes where !

Truck was starting and running, had changed oil and wanted to spin engine without starting ,to fill new oil filter .. Pulled the injector wire that controls fuel solenoid to pump and engaged starter, injector lead shorted on manifold and burned out something in control box . Engine would spin...

A buddy of mine stopped over to help me get my 1989 m998 Hummvee running , took him about 15 minutes to jump out that so important smart start control box and get my truck running !!! We are looking at rewiring truck to eliminate control box ! Chevy & GM don't use it !!!

You should be able to bypass or rewire the m998 similar to a chevy or gmc truck with 6.2 or 6.5 , eliminating that expensive start box and making it easier to trouble shoot truck..

Has anyone rewired the m998 to eliminate or bypass the start box system on these trucks ???

I have a 1989 Humvee m998 that will not start , has anyone bypassed the start control box , and how they did it. Starter spins engine but the control box is not opening fuel solenoid to start engine. Has got to be a way to bypass the start box install a momentary switch to run glow plugs or just...

I have a 1989 m998 that will not start , shorted wire for injector pump and engine will not start now. Do these boxes have to be matched to vehicle or certain years that need different boxes.. Also any way to bypass this starting system an just use a momentary switch for glow plugs or rewire...