ISO LBZ engine wiring harness

mamumtsllc

Member
Sep 4, 2014
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Do you know what the difference is on lbz and lmm? I have a brand new lmm harness we put on and customer threw a fit so I put the old one back on. Would be willing to make a deal.

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Cougar281

Well-known member
Sep 11, 2006
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St Louis, MO
LBZ is closer overall to LLY/LB7. If nothing else, the LMM went to oval bale connectors on top of the engine, whereas LB7, LLY and LBZ were all rectangular. Not to mention the GMT800 vs GMT900 differences. My guess is you couldn't plug a LMM harness into a LBZ truck as easily as you can a LBZ harness into a LLY truck.

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