the 4 wire.red for ignition +12v,orange for +12v battery,black for grounding and white for tacho input. The 2 wire socket for shifting light.Becoz it using led type be sure you connect this 2 wire correctly.Otherwise it won't light....
sorry for the mistake.......
It has come to our Attention that there are unscrupulous Retailers who are bringing in IMITATION GT3540R and selling them as Genuine GARRETT or telling customers it is back door from...