i have great signal when just turn on and stay at one place but when i drive it lost all signal.... i called up pinoneer and they said might be a bad antena so i brought a new one still same problem...oh btw i have avic-f900bt fw 2.XX plz help....thnx in advance....

where is the antenna mounted?

i tried on top of the roof outside under the hood

Is your speed sense wire hooked up? Did you do install or was it prof done? Has it ever worked and just stopped working one day?

i did it myself and no i did not hookup the speed sen. it worked b4 when i had prof done.....instead of of changing the pin to bypass it i just ground the break wire and the pink i put it with the red wire.... i could watch dvd while driving but then gps signal lost after i drive for like 2-3 min....

and the pink i put it with the red wire.... i could watch dvd while driving but then gps signal lost after i drive for like 2-3 min....

WHY

well sending 12v+ to the VSS wire is a bad and dumb ideal, this wire is for the speed sense and is supposed to get a certain signal, not 12v all the time, i cant understand why people think they can can just substitute any part of the bypass instructions for some of their own ideals. either follow the instructions exactly or dont attempt it all all.

outside under the hood

a GPS antenna will never work under metal

hopefully you didn't destroy the system by sending 12v to the VSS wire, learn to start following instructions.

hopefully you didn't destroy the system by sending 12v to the VSS wire, learn to start following instructions.

i concur, what was the op trying to do, find a new bypass method?