The Jensen Car radio install is pretty neat. They have the fader slide switches that goes from the front speakers to the rear speakers. This works out great for my setup where the front stereo speakers are inside the trailer and the rear speakers are outside for sitting under the awning.
These pictures give you the idea of my setup...
The Jensen radio is installed on this cabinet wall. They dont weight anything so install real good just cutting a hole in the cabinet thin 1/4-inch wall. It is wired into a 12VDC circuit. The antenna is mounted on the outside wall of the trailer. You can see the inside speakers here under my wrap around seating.
The outside antenna is mounted at the rear of the trailer just were the hard sides meets the fabric windows. You can also see the outside speakers just above the tire.
close-up of the radio install and outside stereo speakers
The car radios will have the ignition switch 12VDC that will turn your radio OFF and ON using the auto ignition key. I wired this line into a 12VDC push button switch from radio shack and it is installed to the right of the Jensen radio installed in the cabinet. This allows me to keep my preset buttons on the radio active. Otherwise if you wire this line directly to 12VDC you will have to keep pushing all of the button to listen to your radio. I turn my radio on the regular way when we first arrive at a camp site then use the side switch to turn it OFF and ON when camping for two-three days at the camp ground.
close-up of the Push Button switch and Car antenna mount.
The other idea of installing a 300WATT PURE SINE WAVE INVERTER has its merits as well. This will provide you 120VAC power from your batteries and you can have two 120VAC extension cord drops one going to your home entertainment center location and the other going to your bedroom night table. I started out with a 150WATT Inverter, then went to a 300/400Watt unit and finally ended up with a 600WATT Pure Sine Wave unit. Seems like once you start liking the idea you want to add more 120VAC items like your HDTV , DVD player, small lights, small fans, cell phone chargers, computer chargers, the list goes on... Of course INVERTERs like to eat up battery power so a two battery setup is a must have thing but since you like to camp off the power grid like you indicated you may have already have more battery power on-board your trailer. All that is visible in my trailer install is this extension cord multi-outlet mounted on te top of the table or cabinet. No wiring visible anywhere.
You just plug-in here whatever you want to use with the 120VAC power.
This is an install idea for a typical smaller trailer setup...
All of this submitted just for "food for thought"
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS