NSX~PERT said:Who can help me with my ALPINE NAV install? Im confused if I need to connect a few wires. ALpine told me two different answers for the following wires, speed sensor wire, backup wire, and dimmer? Two different guys told me two diff answers one said to install them and the other told me they aren't important. Can any one help me that has installed an Alpine system before.
Your speed sensor wire is for your NAV to know how fast you are going. I've seen Alpine NAV systems installed without this wire and it works fine. However, it's an easy wire to tap into so why not install it just for sake of accuracy?
Backup wire is so that if you have a backup camera, it will switch to the backup camera when you go into reverse. Not necessary if you don't want this feature.
Dimmer is a VERY easy wire to hookup, don't know why you'd want to leave that out. Simple orange wire to orange wire hookup if you are using an aftermarket harness.
All 3 wires are not necessary per se. But I would just hookup the VSS and the dimmer because it's not a huge effort to do either and it's somewhat beneficial.