Join Date: Dec 2017
Location: Central Minnesota
Just info to be noted on that circuit. The power for that circuit runs through the ECM and was designed to run a backup beeper only. There is very little amperage on that. Now when you hook lights directly to that circuit, you need to be aware of the wattage you are asking that circuit to supply. If it's more than a couple amps, you are asking a lot of the ECM. I totally get that guys are hooking directly to the wires and it works, but it is not the safest way to set up that circuit. A relay will separate the amperage load of the lights away from that circuit. The only power that is taken from those wires is the relay activation which is very little and what the circuit was designed for.
In the end, it's your machine, wire it how you like. But I feel it's important to make sure people understand what they are actually doing to make their own informed decision and not burn out an ECM to figure out they did something wrong. A couple bucks in a universal relay is super cheap insurance and only take a little longer to install for peace of mind. Just my $.02. Have a good one guys!