Originally Posted by wmtire
2. I do not know how long the batteries will last in the camera, with it on all the time....as you would need for it to be if using it as a rear-view camera while traveling. I'm sure our electrical guru's here could figure out a way to tie it into the 12volt trailer wiring somehow........and this would be another mod.
The monitor, even though it has rechargeable batteries, could be plugged into a 12 volt DC/AC inverter (using the AC power cord provided with the system) if needed while traveling...so it wouldn't ever run out of power.
Here you go.
If you're like me, you have a car charger around somewhere for that old iPhone (before the 5). Just cut the old iPhone 30-pin connector off and you should see two wires in the cable. These need to be connected to your new wireless camera. You have two options for how to do that.
The first is that Jasco sells an "extension cord" for their power adapter. Extension Cable for Digital Home Monitoring Kit #45255 or Add-on Camera #45256 - GE Digital Monitoring Systems
I think the $5 price is reasonable, but I wasn't willing to pay $10 for shipping. If you can find this somewhere, just cut the female end off and wire that to the car charger.
The second option is the Radio Shack "H" connector
(RS 274-1571). RadioShack
For $3.50 you get two connectors but have to supply your own wire. Just solder this onto the car charger with whatever additional length of wire you need.
In either case, be sure you connect the + side to the center pin of that connector. You may need a voltmeter to verify polarity.
For inquiring minds, older iPhone chargers delivered 5 watts (1 amp). The camera is happy with less than half of that. Newer chargers were 10 watts (2 amp), which you don't need, but will work fine.
Note that the wireless camera system uses two identical AC power adapters, so this approach can be used for the monitor as well! (It uses more power, but still under the 5 watt value.)
In my case the "accessory outlet" on my Winegard TV antennae amplifier was less than 10 feet from my back window. I just plugged my camera into that outlet with my old iPhone charger setup and it works great!