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Strange ground

Fossiljager

Active Member
Joined
October 19, 2009
Messages
84
Reaction score
8
City, State
New London, New Hampshire
Year, Model & Trim Level
90 Bronco II 4.0L/A4LD/
Forgive me for posting here, I'm looking for as much feed back as possible and I'm dealing with a 94 4.L........

I swapped a 94 4.0 w/A4LD into my 90 B2... And now I have an electrical issue that's baffling me.

With a standard test light, I connected the alligator clip to the (+)positive side of the battery, then probe to any of the fuses in the large component fuse box on the fender well. It seems that the fuses have all been grounded out some how. The test light comes on whenever I touch a fuse from the (+)positive side of the battery. I should get a spark not have the light come on.... right?

When I test with the alligator clip on the (-)negative side of the battery and the probe to the any of the fuses, the light does not come on...

I tried isolating all the components by unplugging everything while watching for the light to go out, with no success.

Any ideas?

Thanks,

Harl
 






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