Bought a motor home with a vr185 jenson radio installed. have no instructions on using it.

'Jenson'? Did you mean 'Jensen' with an 'e' or 'Jebson' with a 'b'?

https://www.google.com/search?q=Jenson+jb5501

Everything can be found online

..

well ask these guys first

https://www.scosche.com/car-audio/installation


the newer cars the radio is also serial locked to the BCM
and must be undocks (park)to do upgrades.
ask your supplier of upgrades for help,

go to AZ or your local parts house and purchase a hayes manuel for your vehicle, it will have the info on how to remove your old radio, now when installing the new radio just read and make sure you understand the installion instructions before installing the new one.

I would try Ebay first. If not? Try www.Jenson.com I have had luck with them. Or Best Buy..Circuit City. And any Radio installer place in your area has them on hand.

Yes you will need a harness to install your HU. Here is the link to a website which has all the items needed to install your deck. I would do the research but I do not know the year of your car....

http://www.autosoundcentral.com/Jetta_s/213.htm

Do you have it set on mp3

My first question is on the main radio is there any aux, or any switch or if you plug headphones in to it do you get sound

no wireless or wired remote is possible. Use the accessories 12 volt positive to activate your amp

The user's manual containing the instructions can be downloaded here
http://www.asaelectronics.com/techpdf/VR185%20Owners%20Manual%2011-6-06.pdf

Thank you.