Okay i am about to install a blitz turbo timer on my z and just wondering if anyone has done this before? i looked on the net and found this http://www.mdsmarthome.com/z/Z Tech/Z Tech PDF's/Blitz Dual Turbo Timer Install.pdf i am just confused because the turbo timer has an earth and not sure if the harness as an earth as that i should ground. the harness has a spare white wire not sure if thats the earth or if i should connect the black earth wire on the turbo timer to the white [/IMG] [/IMG] [/IMG]