Was given a shift light and an autometer tach adaptor for christmas. Went to install it, did the usual, tapped into the thick red wire, pin 34, but had to cut it in half to run the couple wires off the adaptor. Sure enough I get everything connected and my car feels awful. I reloaded my tune and everything, double checked and redid all my connections but still, she seems like she is running rich, very loud, the car is bucking and very rough at idle and pretty much through the whole rpm range. Any ideas would be greatly appreciated, I am just out of ideas here.