jesusgatos
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Adapting a 1966 Chevy cab to an M1031 chassis. Retaining 24V system, using the 1966 wiring harness for cab controls and instruments, and CUCV chassis/engine harness. Working on splicing the two harnesses together now, making some changes/upgrades at the same time. Slow going, but is coming together alright. Have a few questions though, and would appreciate some help.
Eliminating glowplug module, adding momentary button, and would like to replace stock glowplugs with 24V HMMWV glowplugs. Have read conflicting information about whether or not those are actually 24V though. Can anyone tell me for sure whether HMMWV glowplugs are 12 or 24V? Is that even possible, seeing as the glowplugs are grounded through the threads, and chassis ground is 12V?
Would also like to use the button-style glowplugs, ideally with 90-degree connectors if possible. AM General part number is 8338564, and nsn is 5940003996676. Looking those numbers up, appears they're just standard packard-style MS single wire connector. Are there any low-profile 90-degree connections for those available? Can't seem to find any.
Replacing stock glowplug and starter relays with a much heavier-duty pair of Stancor relays, rated for 200amp continuous duty. Found these while researching the doghead relays, and noticed that these also have isolated grounds, and are higher-rated. Also less expensive than the doghead relays, so maybe another good option?
Already pretty deep into the wiring, so decided to relocate the starter relay to the engine compartment. Think want to run one wire from +12v to one of the big lugs on the relay, and then another wire from the other big lug to the starter. Starter signal/switch wire goes to one of the smaller terminal lugs, and then purple wire goes from the other small terminal lugs to the small lug on the starter. Same question as glowplugs - how is the 24V starter grounded if the chassis ground is 12V and the 24V ground is floated? Obviously missing something.
Also removed the stock fuel filter setup and stripped out the ICE diagnostic stuff. Think was able to identify all the things knew wouldn't need for anything else, only wondering about the wires that went from the ICE to the alternators (brown wire and a black/white wire on the drivers-side alt, and a pink wire on the pass-side alt). Do those serve any other purpose, besides ICE? Planning on adding diesel tach using alt wire, would want to use any of those wires for that signal?
Will have more questions, but these are the most urgent things need to figure out. Thanks in advance for any assistance.
Eliminating glowplug module, adding momentary button, and would like to replace stock glowplugs with 24V HMMWV glowplugs. Have read conflicting information about whether or not those are actually 24V though. Can anyone tell me for sure whether HMMWV glowplugs are 12 or 24V? Is that even possible, seeing as the glowplugs are grounded through the threads, and chassis ground is 12V?
Would also like to use the button-style glowplugs, ideally with 90-degree connectors if possible. AM General part number is 8338564, and nsn is 5940003996676. Looking those numbers up, appears they're just standard packard-style MS single wire connector. Are there any low-profile 90-degree connections for those available? Can't seem to find any.
Replacing stock glowplug and starter relays with a much heavier-duty pair of Stancor relays, rated for 200amp continuous duty. Found these while researching the doghead relays, and noticed that these also have isolated grounds, and are higher-rated. Also less expensive than the doghead relays, so maybe another good option?
Already pretty deep into the wiring, so decided to relocate the starter relay to the engine compartment. Think want to run one wire from +12v to one of the big lugs on the relay, and then another wire from the other big lug to the starter. Starter signal/switch wire goes to one of the smaller terminal lugs, and then purple wire goes from the other small terminal lugs to the small lug on the starter. Same question as glowplugs - how is the 24V starter grounded if the chassis ground is 12V and the 24V ground is floated? Obviously missing something.
Also removed the stock fuel filter setup and stripped out the ICE diagnostic stuff. Think was able to identify all the things knew wouldn't need for anything else, only wondering about the wires that went from the ICE to the alternators (brown wire and a black/white wire on the drivers-side alt, and a pink wire on the pass-side alt). Do those serve any other purpose, besides ICE? Planning on adding diesel tach using alt wire, would want to use any of those wires for that signal?
Will have more questions, but these are the most urgent things need to figure out. Thanks in advance for any assistance.
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