I just put 1 on my 300 and I used a relay wired to the battery with a fuse for the power. Grounded it to the battery also. Tapped into the high beam wire for the power to energize the relay. Even though the relay is always hot, it’s only energized when the key is on and the headlight switch is on high beam. Relay and fuse fit easily in the battery box on my bike.
Yup @ngagne96 this is the best way to do it. Requires minimal amps from high beam circuit to close the relay–then you can power the light bar nearly up to 40A or to whatever the harness fuse is rated.
If you want to calculate your limit, use
Power (Watts) = Inductance (Amps) * Electromotive Force (Volts)
(P=IE)
Divide your light rating in Watts by 12V to get you light draw in Amps
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Honda ATV Forum
618.3K posts
80.1K members
Since 2008
We’re a forum community dedicated to Honda ATV owners & enthusiasts. Come join the discussion about upgrades and reliability for your Rancher, Foreman, Recon, FourTrax, Pioneer, and more!