: looking for nav sys for 99 STS

07-26-09, 06:44 AM

Im looking for a navigation system for my 99 sts.

Does someone have one which will work in my 99 sts?



07-26-09, 11:54 AM
99 STS had no nav option
you can install a 02+ DVD nav system into your car with slight modifications
do a search to find more, i make the harness to do the swap if you have problems

07-26-09, 12:11 PM
oh okay cool

how do u want for the harness?

so i have to buy a 02+ dvd nav and use ur harnes and it will work?

07-26-09, 01:24 PM
I have an extra one that I will sell you that has a NAV disc for $400. Then you would need to buy a harness from CadillacSTS2003 and a GPS ant. Then you are set!

i think he charges around $100 for the harness and you can get the GPS ant. for like $40.

Let me know if you are interested in the Nav unit. I can send you pics of it hooked up and working if you wish.

07-26-09, 07:09 PM
If you act fast, there is a nav unit on eBay that sounds to me like it just needs a software upload...$150...