Re: Aux lights on 99' U270
Reply #9 –
I disconnected wire 20B from "Aux Light" switch. That was the power feed from the headlight switch. I ran a new connection from wire 5, to the former "20B" connection point on the "Aux Light" switch. The circuit for wire 5 has several spades available since it supplies power to switches, gauges, and the Warning Bar. Wire 5 has a circuit breaker, and is powered when the ignition switch is on. The "Aux Light" switch powers a relay for the fog/auxiliary lights. The higher current for the lights is supplied via wire 89 which is protected by an appropriate circuit breaker.
The change is relatively simple and leaves all circuits protected by OEM circuit breakers and relays. I supplied the power to the "Aux Light" switch from a difference circuit. The wire numbers are for a 1997 U295. I got the information from drawing B-2197 and a wire list dated 12/28/95.