as long as they are not l.e.d indicators you cannot go wrong mate they have two wire and it doesnt matter which way around you put them ,if they are l.e.d then you need to try the 2 wires both ways around as a led is a diode and will only work one way around.also they standard relay may need changing or a set of inline resistors fitting to make them work with the original relay .
adam bike doctor(of milton keynes motorcycle centre), February 2011