Hi people, i have an interior light from a cavalier gls which has the two other map lights in it. was wondering how i wire this in to my astra g. The cavy light has a brown, a black,a grey and red wires attached to it and my astra only has two wires, red and grey. how do i make this work, i assumed red and grey were positive and brown and black negative? as the light has three bulbs does it mean three of the wires have to be positives and one negative?
any help is appreciated