Its the one on the passenger side of the vehicle right??

 

Yes. Are you installing a satellite radio tap?

 

Yez,

And for our conveince the antenna peice we are supposed to keep tightly stretched is two inches two long for our window... so it looks like it has to be diagonally.

Im also looking to install a CB radio but i want to put the antenna under the car. I need it to have a short range. but i cannot have the antenna visible. Any ideas?

 

I just finished installing an XM radio. I used the exterior antenna and put it on the roof center rear -- about an inch forward of the liftgate. I ran the wire inside where the third break light comes in, and through the door sills to the front. The sound quality is amazing.

However, I did consider the tap. So, I'd be curious how it works out.

Good luck!