Ive managed to properly install 2012 rear leds in my car using powerfuls resistors and ballasts.. tonight I'm helping a friend do his but he's purchased the interface boxes..complete brain fog so any helps appreciated.
.I presume it's a matter of cutting the cable that feeds the lights then wiring into a chopping block...I'm unsure about what side of chopping block does the interface block go.. does it get wired into the side which will have the light connection or the other? Apologies for much dimness
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