Posted by admin | Posted in Parts And Stuff | Posted on 29-03-2010
Tags: 12v, awg, electrical, guide, wiring
Trailer Circuit Wire
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How could I keep the Radio in my truck from losing it's memory?
Alright, I drive a tractor trailer for a freight company. Of course, there are no radios in the truck. What we(drivers) do is build a box with speakers and a car radio mounted in it. There are bannana plugs on the dash to get power from. Now The only problem is that everytime you shut the truck down the radio will lose it's memmory (presets, Volume level, etc). I could get an analog radio but that is just out of the question. I was thinking more along the lines of a secondary power source. Like connecting a 9V battery connector to the memmory wire so when the truck is off it will still hold it's memmory. Seeing that the radio won't work without this wire being hooked up to the trucks power I would have to incorporate a diode of some sort so I don't fry the battery. What kind of diode should I use and Where should I put it in the circuit? I can't mess with the truck, so whatever I do has to be done in my radio box. Thanks for any info....
I don't see why hooking a 9 volt battery to the memory wire when you remove the radio power supply wouldn't work. They sell connectors to connect a 9 volt battery through the cigarette lighter to supply current to memories while you change the battery in a vehicle so the memories aren't lost in different car functions which include radio memory among others. You might want to wire a switch in the circuit so it isn't on all the time. Check out: http://www.autodax.com/products/toolsequipment/kas295a.htm ...Good Luck...
