i didnt to any electrical work with my guage cluster.....well when i got the car, the pass. bumper light wires were pulled from the harness, and i wired them back together, there were a total of 7 wires......5 of them were to the bumper lights and the other 2 i believe were ground. im more than sure i did the bumper light correctly, but the 2 ground wires were the exact same so i wasnt sure which goes to which, so i just wired them together thinkning it wouldnt matter cause there both the same.....