Hi all i got a quick question for some 1 who knows a bit about electrics.
O.k i own a 1990 (h plate) fiesta rs turbo and i want to fit this (apexi) turbo timer that i have recently purchased off of e-bay the thing is, is that it has come with no instructions as it was second hand.

Rite it has a 3 pin plug on it with a red, blue, green wier leading to it
a grey wire on its own and a black wire on its own

the shape of the 3 pin plug is like this l= that shape

please HELP somebody