I am adding trailer wiring to my MY07 eos. I’m planning on towing a motorcycle tent trailer, under 600lbs. My question pertains to the sensing system to find overcurrents in the rear lights. I plan on using a relay based system, but it requires to use the factory wiring to send voltage to a relay. Will this small current cause issues, forcing me to buy the spendy magnetic system, or can a few milliamperes be spared for a relay?