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Hi so I bought a pair of custom taillights from Ultimate Lights and they are plug n play except for the show mode options. For the show mode controller, there is a negative and positive wire that I have to splice into a 12v source. What would be the best place to wire it into? Thank you.
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I do not think there is a 12v source in the rear. You could check the wires leading the the tail light module. On the drivers side of the trunk. Safer bet is to run a fresh wire to the front.
 
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