Hey all, works been slammed so not much time to get on here. Hope everyone's doing ok. Just got a question about installing a 2" drag spec tach on a 2010 FXDB. Where do you hoo up the signal wire?? Ive inst these on older hd's but not a late model. Some one has told me about a pink wire in the speedo connector, and another has told me about an expensive resistor for the aftermarket tachs. The tach has 1 red wire(switched pwr), 1 black wire(GND) and 2 green wires(??). Any help would be appreciated.