a friend of mine recently purchased a pioneer navi/dvd/mpr/cd/ player for his car...my question is that on the installation booklet it says he has to buy an exterior module to tell the navi system how fasts he's going...is there anyway he could bypass that by somehow wiring it up to his speed sensor on the car??? u know the sensor that displays how fast ur going on ur speedometer????

 

Didnt you just purchase a pioneer navi unit?