the parking brake wire on my 92 VR4 was gray not purple. It runs along the center console on the driverside. Take off the carpeting and it should be in plain view. As for the RPM wire, im not sure what year you have so it could be in a few places. If your a 91-93 it should be pin 101, if your a 94-97 then its pin 58, a 96-97 is pin 51 and 98-99 is pin 45. I'm looking for the diagram that will help you out a little more, ill post it if i find it. Hope that helps.