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Is Using Relay on Blazer MM510 Wiring Kit Necessary to Wire Auxiliary Lamps on Boat

Question:

So another question. Do I have to use the 40amp relay that come with the blazer wire kit to hook up my new water dragon 2700 lumens green light. Cant I just come off the extra battery to the fuse to the switch and back to to light.what does the relay going to do for this system.12vdcin my boat.

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Helpful Expert Reply:

I would recommend using the relay included with the # MM510 Blazer wiring kit, as it keeps the higher amperage from the supply to the lights from the toggle switch. If you're only running a few lamps like the # TN44RR you'd looked at, it isn't terribly important but since this is being used in a marine environment I'd recommend keeping the higher amperage away from the switch if possible, which is what the relay does for you.

I've linked to an install video for the wiring kit.





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Mike L

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