i have a set of VDO gauges,they are electrical and not mech (i have been told)boost i get but the oil pressure and the temp one i have no idea how to install them(if it is at all possible)do i need some sender thingys?
they have 3 male spades on the back ,+, -, and G which i presume is ground(earth).
any help on this one ,as in if possible and where to conect the oil press and temp too