Ben, my advice is leave the ignition key vs start button alone - I've spent many hours trying to diagnose & cure a friends 3.7 that used to go a bit flaky on restart when switched off in long hot queues of traffic, he has a button start, mine is key only
Spotlights on non bumper cars were often fitted by just drilling the alloy wings, not ideal with all that vibration and leverage from the weight of the spot, I've seen starcracks in the paint on some
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