I don’t know for sure how yours are designed but the typical high amp accessory requires a low amp control circuit and a high amp load circuit, with a single pole single throw 40 amp relay for each accessory.
The control circuit taps accessory power using a two-wire sub harness that splices into the ignition circuit. This ensures your accessories aren’t powered when ignition is switched off. When ignition switched on, the circuit is energized–you turn on your accessory (a winch or grips) which closes the circuit energizing the relay. The relay uses just a few amps to operate which allows you to control both the winch and grips on the same accessory power supply circuit.
The relay then closes the load circuit, wired directly to the battery, powering your winch or grips. Each accessory is likely to have its own load circuit.
Your system would then be limited by the electrical system to keep up with the current draw.
The control circuit taps accessory power using a two-wire sub harness that splices into the ignition circuit. This ensures your accessories aren’t powered when ignition is switched off. When ignition switched on, the circuit is energized–you turn on your accessory (a winch or grips) which closes the circuit energizing the relay. The relay uses just a few amps to operate which allows you to control both the winch and grips on the same accessory power supply circuit.
The relay then closes the load circuit, wired directly to the battery, powering your winch or grips. Each accessory is likely to have its own load circuit.
Your system would then be limited by the electrical system to keep up with the current draw.
