I recently went on a rather long trip to Truckstock 2012 in my stock '49 F-2.
For added convenience and safety I wanted to use my GPS system and my cell phone
but I thought I had to add some kind of 12 volt converter. I researched the subject found
the newest devices use "smart chargers" which put out 5 volts and as long as they can sense
an input voltage source as low as 6-7 they'll send out the needed 5 volts to charge the device.
If your vehicle is like mine and has the stock positive ground electrical system you will have to maintain a negative ground in the power receptacle for the protection of your electronic device. You will have to insulate the case of the power receptacle from the metal of the dashboard and swap the power lead, the black negative wire of the power port will become your hot wire, the red positive wire will become your ground wire. Follow the steps below to wire your power power. If your vehicle is negative ground you just have to wire it up like a normal 12 volt unit.
Step 1: I cut the red wire coming from the center post of the receptacle, keeping the fuse holder for later use, attached the 1/4" crimp ring terminal.
Step 2: I soldered the fuse terminal to the black wire coming from the receptacle and covered it with a piece of heat shrink tubing. On the other end of the fuse I crimped on smaller #10 ring terminal to attach to the accessory post on the ignition switch.
Step 3: I cut the piece of plastic to fit and inserted it between the receptacle and the bottom of the dashboard, using the 1/4" nylon bolts and Keps nuts to fasten it to the underside of the dashboard. I also inserted the 1/4" ring terminal between one of the Keps nuts and the metal dashboard.
I used this set up on my 1600 mile trip without a problem. Both my GPS and cell phone worked great. Whenever my cell phone got low I'd plug it into the receptacle and it would charge to full. I didn't notice if it took longer to charge in my F-2 than it did in my daily driver but I doubt if it did it was much longer.
Last updated on November 5,2012