I am thinking about upgrading my stock radio to a GM Nav unit. My question is on the below unit, what are the extra 2 connections on the right? I know in my radio I have now I only have 2 connections, would the others be for rear dvd?

 

Probably the attenae for the nav would be one of them

 

Yeah thats the blue one, i am wondering about the 2 extra 16 pin connectors.

 

Do you know the RPO code for that NAV system. Might be able to dig out the schematic for it. My guess would be a remote CD Changer and Hands Free phone

 

I could find the RPO. I guess my overall question is, if I plug in the two 16 pin connectors that run my radio now, and the GPS anntenna, will this unit work?

 

I THINK it will work. I've not installed one of the NAV units but have swapped/upgraded factory head unit in mine. Same thing. Several connections in the rear with nothing to plug into it. These are the inputs for the different options, no hands, rear controls, bose amps, etc....

 

That what I figured, that they were connections for the overhead dvd and stuff. I think I'll get one and try it out...all else fails I'll put it back on ebay. Thanks for your input.

 

I am wanting to do this myself, but not quite ready to drop that kinda money. Still waiting on the new business to pickup and take off.

 

UPDATE: Got the unit off ebay for $400 bucks! Part number 25894203. It came with the GPS antenna and Nav disc, plugged right up and it works perfectly! No extra wiring! While I had it out I installed an Ipod direct connect kit I got from Best Buy (http://www.bestbuy.com/site/olspage....=1202650491628) and it all works great! I'll post pics tonight.

If anyone is thinking of doing this trust me, watch Ebay you can find one pretty cheap, and the install is very easy; I had it all done within an hour.

 

where did you put the gps antenna?