Just a quick question, what are the vital wires need to be connected for a turbo timer to work. I just bought a older HSK turbo timer and I want to wack it in my self. Is there more to it then just wiring up ignition, ground and positive?
Although I don't really know the HKS timers personally usually you need to hook up the following wires:
Ignition +ve
Ground
+12V constant
Accessories
Handbrake (or ground)
and either injectors, oxy sensor, tacho or a vacuum (boost) line depending on what it uses to calculate how long it should stay on for.