bigbee
Member
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This could be an M37 question or general electircal-but I'm perplexed.
Bought M37, started and ran fine, except the only electrical that worked was gauges, turn signals (12V), and horn. Rest of wiring was shot, one headlight was black.
Bought new harness (second hand, never installed before) and installed same. Once I got the dash wired in, my buddy says see if it starts. It started and ran well.
Headlights were hooked up and tried, they faded out after a few seconds of bright light. I did have to cobble the headlight to harness pigtails, didn't come with the set. Marker lights and taillights (new replacement composite lights) installed after the headlights seem to work fine. .And headlights are still melting, not going dark like burning out but smoking and turning bright white inside.
Truck started 3-4 times, ran strong, til the last time it suddenly ran rough and died. Now it doesn't seem to get spark, though I checked the coil against ground and had 24v to the points as far as I can tell. I do have extra parts, and have replaced all of the pieces in the distributor, set the points according to specs, etc. Have not replaced the plugs (I have extra new ones) nor the plug wires (I do not have these). Starter is cranking good, ignition switch is working.
Are these problems related?
Is it a grounding thing?
Do I have to redo the whole wiring loom or just part?
I'm not a real mechanic, and I don't have a lot of test equipment-just a small multi-meter.
Simple, easy steps, please.
Bought M37, started and ran fine, except the only electrical that worked was gauges, turn signals (12V), and horn. Rest of wiring was shot, one headlight was black.
Bought new harness (second hand, never installed before) and installed same. Once I got the dash wired in, my buddy says see if it starts. It started and ran well.
Headlights were hooked up and tried, they faded out after a few seconds of bright light. I did have to cobble the headlight to harness pigtails, didn't come with the set. Marker lights and taillights (new replacement composite lights) installed after the headlights seem to work fine. .And headlights are still melting, not going dark like burning out but smoking and turning bright white inside.
Truck started 3-4 times, ran strong, til the last time it suddenly ran rough and died. Now it doesn't seem to get spark, though I checked the coil against ground and had 24v to the points as far as I can tell. I do have extra parts, and have replaced all of the pieces in the distributor, set the points according to specs, etc. Have not replaced the plugs (I have extra new ones) nor the plug wires (I do not have these). Starter is cranking good, ignition switch is working.
Are these problems related?
Is it a grounding thing?
Do I have to redo the whole wiring loom or just part?
I'm not a real mechanic, and I don't have a lot of test equipment-just a small multi-meter.
Simple, easy steps, please.