jollyrogr

I'm a noob and don't know much about auto nav systems, so take this FWIW. I just installed a D3 in my car and didn't hook up the VSS. Just did a 4 day road trip over Thanksgiving weekend and there did not seem to be any degradation in the nav capabilities of the system. I thought I might hook up the VSS in the future, but so far I see no reason to do so. Also, I fly small aircraft (cessnas and such) and use a handheld Garmin system when doing so. The Garmin doesn't talk to the plane at all but navigates quite well. Is there a difference in an automotive application? I don't know.

I haven't hooked up my VSS yet, wanted to see if it did OK without it. From reading some other posts here it doesn't sound like it is that critical. On the test drive last night it seemed to work fine without it, but I don't know if it will make a difference long term. If you can't find the location of your VSS wire here, there's got to be a forum out there for your model. Find it and dig through the archives, I think anybody who installs anything like this wants to know where it is and it has probably been discussed.

Howdy, Just installed a D3 in my Saab 9-2X. Everything went in pretty easily, mostly due to the great info I got lurking here. I also did the bypass and it worked as advertised (my unit was manufactured Aug 07). I also have the Bluetooth unit and a Sirius receiver, but I haven't hooked them up yet because I haven't figured out the best way to power them. Is it OK to tap off of the 12V constant wire that feeds the D3? I don't know how much draw the components have so I don't know if that wire can handle it. If that's not a good idea, does anyone have any suggestions for where else t