Don't splice into anything and don't rely on the fog light circuit fuses. You aren't understanding what I am saying.

Take the power from the output lug; mount another eyelet don't cut the wires. This will power whatever lights you have without compromising the lighweight foglight circuit.

Only use the foglight circuit to turn on the lights. Use the circuit to turn on the relay which will not take much power.

DO NOT hook additional lighting to the existing load, provide a separate circuit from a good source (the alternator or starter are as good as the battery).

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician