1911
chupacabra
How did you rewire your ATRAC and VSC back in or were those not affected by the Lefty.
Not affected by Lefty. The only interface between Lefty and the stock wiring harness is a singe shift sensor in Lefty that detects 4-Low. In the FJC, you wire this in place of the stock 4-low sensor so that the 4WD ECM will let the factory electric rear diff locker lock, and you put in a manual SPST switch in place of the 4-high sensor that was in the stock case, to activate the ADD on the front diff. Not sure how many sensors you have on your 4R. But A-Trac and VSC are unaffected by Lefty on the FJC and still work as original.