I think I'd approach it from a slightly different angle, maybe construct a
small box with a small 12V battery such as you find in rechargeable self
contained PA units. It would connect with a power supply to generate 5 V to
a USB port for running phones, etc and a 12 V cigarette lighter type port
for other things. One could incorporate a solar cell for recharging and/or
(especially if you canabalized the above mentioned self contained PA) a
plug in recharger. The car remains completely unchanged.
Ron L
3. Re: Accessory power in +ground TR3 (Randy and Valerie DeRuiter)
4. Re: Accessory power in +ground TR3 (Randall)
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