hi, can anyone help me please, ive got one of the conversion units so that my car drives in mph but no instructions to wire it in and no local instructions, its got 4 wires on it, red, black, yellow, green.
i know the red is live and black is earth and thats it, i need to know which is the speedo wire on the loom behind the clock and that is where the yellow and green wire goes.
thankyou.