I have Keystone Bullet TT. It has a Jensen radio and tv. In the past I have used the speakers for the TV. For the life of me I cannot remember how we did it. Just turned 80 that may be the problem HEH...
When I first attempted to play my tv through my rv speakers I thought it was not working. Then I went outside and yes it was working. I only had my outside speakers on . Now I know what those 3 little LED lights are for, speakers A-B-C . (and I'm not even near 80 yet ! I have so much to look forward to in life ) :W