Review on 🚗 Upgrade Your Vehicle's Electrical System with Gebildet JD1912 Car Relay Harness – 12V 40A 4 Pin SPST Harness Sockets for Automotive Truck Van Motorcycle Boat (Pack of 2) by James Roberts

Foreword. I had no idea what I was doing when I bought this. Just an idea. I'm not an electronics exporter at all. On the contrary. I have actually used this to only turn on the auxiliary lights on my dirt bike when the dirt bike is running to avoid having a switch set or constantly on and draining the battery. Layman's Instructions: There are 4 wires. 2 are thinner and 2 are thicker. thinner wires connect to + and - of your "trigger". In my case ignition. Thicker wires will connect to your circuit. For example, one of the thicker wires connects directly to the + of the battery and the other to the + of the accessory. The negative of your accessories can be connected directly to the battery. The accessory is powered only when the trigger is powered. Don't worry about + or - trigger wires. It does not matter. I figured it out and never used a relay in my life. I could recommend this one.