QX4 Nav system

[Gootz]

I have a 03' QX4 w/out a the nav. I bought on e-bay the OEM nav system for the truck with the bose radio. How difficult would this be to install? Has anyone ever done this before? Any info would be great. Thanks!

[driverdriver]

If its CD based NAV, it should be plug and play. I haven't seen a NAv unit on a qx4, but you may require a different trim bezel, if it installs behind a trim bezel.

Also verify if you need an upgrade in stero fuse.

[metaverse3]

I have a 03' QX4 w/out a the nav. I bought on e-bay the OEM nav system for the truck with the bose radio. How difficult would this be to install? Has anyone ever done this before? Any info would be great. Thanks!

All fine and dandy..do you know if you have the factory GPS antenna in place ? The unit is useless without it...

[Gootz]

I found a site where I can order the antenna for $53.00, also the bezel to fit the Nav for $66.00. Can you think of any other snags? I hear it has to be wired into the speed sensors? Thanks for the tips

[metaverse3]

I found a site where I can order the antenna for $53.00, also the bezel to fit the Nav for $66.00. Can you think of any other snags? I hear it has to be wired into the speed sensors? Thanks for the tips

Here is a link to the audio wiring: http://www.directechs.com/dire...Audio#

While I'm at it..here is a link to the remote start wire codes: http://www.directechs.com/dire...Start

Some info for VSS and Tach:

The vss and tach wires can both be tested using a multimeter.

For VSS: Get the car in an open area. Set your multimeter to read AC voltage. Place your black lead to ground and the red lead to the suspect wire. Put it in drive and give it a little gas. The multimeter should read close to zero when stopped and rise to a volt or more while moving. Faster you go, higher the voltage.

For tach: Set your multimeter to read AC voltage. Place your black lead to ground and the red lead to the suspect wire. The multimeter should read close to zero with the engine off and rise to 1 - 3 volts with the engine running. Give it some gas (car in park) and the reading should increase as the rpms increase.The VSS signal is usually found on the speed sensor on the transmission, although that usually is NOT where you tap into the wire. Assuming you have a wiring diagram for the vehicle they will list a more convenient place to pick it up at.Tach wire is commonly found at the coil packs or the tachometer in the dash cluster. Nowadays a lot of places are recommending to go to an injector wire for a tach signal for remote starts at least. The only time I hook up tach on cruise controls is if the vehicle is a 5 speed.Another wire some cruise controls will want hooked up is the neutral safety wire. This wire normally will see a ground in park OR neutral.

The best place to get VSS is at the instrument cluster. I don't have access to the FSM, but my experience with nissan/infiniti's always has the VSS wire on the tach connector. When I installed a pionner GPS on my wife's J30, it was there.. Follow the testing procedure and run a wire to your new nav unit... Post back if you have anymore questions. Check http://www.the12volt.com. Lot of pro installer help if needed.. I'm on there as well..