Dealer also recommended checking out warning lights on the dash when starting up. May take a couple tries but that's how I identified it on mine (before getting on the ground and checking it out).
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Mounting
Great write up Doc_Fry ! Looking to copy your mod and had two questions on it:
1) Where did you end up mounting the switch?
2) Where did you end up mounting the lights? Your last night pic shows some great coverage but it sounded like it was just a short term setup to test the quality...