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when im cranking the starter it will run but when i let off the coil looses its 12 V and dies. Havent had time to tear into it yet, just wondering if anyopne else has had this problem

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Most people think of their skin as an ally. Makes me rethink having skin at all

It is either the ballast resistor or the relay that drives it. Unhook both ends of the resistor and check it for continuity or measure out the ohms on it. (Assuming you have a multimeter at least) I forget what the ohm rating on it is but its in the service manuals, even the haynes.

To test the relay system, hook 12v directly to the coil and see if you get any voltage to the resistor once the truck is running.

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95 Isuzu Trooper Daily Driver
86 Isuzu Trooper reliable backup
77 LUV 2wd stock beltway blaster (resting)
79 4x4 LUV project: 2.6L, 5spd, 31s (eventually)

MEPR: Man, my 4x4 makes all other LUVs look good

its the ballast resistor, $17.95. I can afford that. I talked to a guy at work and he told me to check that out too. Thanks for the help

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Most people think of their skin as an ally. Makes me rethink having skin at all

yeah, been through that before...