use the circuit attached.You can use "OUT" to control the relay that can be hook directly from the battery or where ever you currently use.

Attached files

iGuidance is best for navigation but very $hitty when it comes to routing. S&T is good for routing and planning. It's really junk for navigation. BTW, I like the compass.Google maps is darn good with routing. Most route I try seem to be very accurate. Not sure about long distance routing.

I use Routis(v1) which is the same as iGuidance (v1). Street names on the map is a little small (10 pt font). With iGuidance V2+ there are setting to make font size bigger which is a BIG help on small screen. MS Street and Trip has no problem with street names cuz you can zoom in the map for bigger ...

The reason I suggest docking station is that any mod you do, it will be on the docking station.

Best GPS software?Accuracy: MS Street & Trip 2005 cheap, PITA to use for navigation.User Friendly: iGuidance V2+. Not sure with Co-Pilot.gpspassion.com has more info.Quality will be SUCK if you use video screen for computer display especially on small screen.

Best way to use laptop for carPC is with docking station.It's much easier to power and turn on with the key.For screen, to be able to read text, you must go with VGA screen. 7" or 8" are available. Xernac or Lilliput are better than most other brands.Hit mp3car.com forum and you will find ...

JustinVGT Thank youjoatmon With the shifter infront of the HU, changing disc is a problem when in 1,3 gear. Other than that verything is right on the finger.ArcsVibe My whole project cost (excluding my time) is posted on mp3car from the link above. Seriously till today, I didn't know the grand total...

Maybe this project will motivate some of you guys into carputer.I posted full project installation, fabrication on mp3car.com forum so I am just post the result here.Matrix Car PC setup http://www.mp3car.com/vbulleti...45897 I post here cuz 03/04 Matrix and Vibe are basically the same car.