I put an LLY sending unit in a LB7. I had read that it couldn't be done. Never one to leave well enough alone, I did it! The issue is that the gauge now reads backwards. Does anyone know why this is or if it can be fixed?

I bet the harness is different
polarity is backwords

I flipped the wires. It made no difference.

You can fix it with EFI Live, the sensor scaling is backwards. What the LB7 sensor reads at full is what the LLY reads at empty. Beyond that, I cannot think of any way to fix it...

Excellent!! Thank you! I just talked to Chad at Allligator Performance and he thought the same thing!! This place is awesome!!!