inputs.text: motorcycle installation - installed unit inside headlight housing yamaha v star 950 carefully studying motorcycle wiring diagram learned prewired connector optional light bar accessory since not using accessory light circuit determined perfect location tap motorcycles electrical systehem light circuit power engine running tapping prevent gps drawing power motorcycle battery not use enough room inside headlight housing insert 12v power transformer usb connector threaded back headlight housing next plugged usb connector gps device mounted handlebar cranked engine viola no clue would cause gps devices switch data mode nuvi 255 correctly switches battery direct current mode engine running switches back battery power motorcycle engine turned