DOES ANY BODY KNOW WHY MY D-3 `S NAV. GETS UNACURATE WHEN GOING SLOW LIKE IN TRAFFIC??

probably dont have the vss hooked up

OK WHAT IS THE VSS AND HOW CAN I KNOW IF ITS NOT HOOKED UP?

AND WHAT DO I TELL THE INSTALLER WHAT IT IS?

VSS Vehicle Speed Signal usually from the speed sensor to the ECU. Tap the wires and hook up the pink wires to the D3.

go into hardware info, then connection status. the speed pulse number will go up as you accelerate if it is hooked up. if not it will stay at zero

thanks miss fit well the speed pulse does go up when i step on the gas.

does the back up wire have to be connected?

is there a # that the speed pulse should reach or it stay the same at no matter what speed?

you dont need reverse. the speed pulse varies from car to car. no set numbers. as long as it goes up and down with your speed its fine

thanks again mis