Well yea, in a pinch without a meter, but I'd recomend running the jumper from an accessory fuse, or the Blower motor fuse just to be on the safe side. And if you DONT have a meter, theres all sort's of 12V tester probes you can grab cheap at most parts stores for under $8-10, it basicly act's like a jumper wire with a light bulb along the line, so if theres voltage, the little light pop's on. If you have an extra turn signal socket, you could make one yourself by adding some 16-18 gauge wire and a couple alligator clips.
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