Hey guys- Helping a friend with his 1968 Impala SS. He bought it already ~90% restored. It had a new wiring harness installed, but there are some issues. For instance, when he puts the car in reverse, instead of his backup lights coming on, the turn signals light up...! Been searching online for a detailed wiring schematic, and this website came up in the google results. Does anyone here have a clear detailed schematic for this car? We are hoping it is just a couple wires crossed, but with the aftermarket hydraulic system, I don't want to just blindly start pulling things... Thanks in advance!