Dual Lights

I have a set of dual lights with fog/driving all in one unit. I have the factory fog light switch that I would like to retain. I would like to have the fogs go off and the driving lights go on whenever I go to high beam. If I wire a relay like this: PIN 30: SWITCH 12 VOLT INPUT PIN 87: DRIVING LIGHT SWITCH OUTPUT (Input to light relay box) PIN 87A: FOG LIGHT SWITCH OUTPUT (Input to light relay box) PIN 86: GROUND PIN 85: HIGH BEAM INPUT (+12) The lights have there own relay box. Would this work?

Depends on how the OEM wired it. I modified mine to do something similiar and added fog functionality with parking lamps only with this method. 1. Mods to OEM fog wiring -Switch source became parking lamps, was low beams ---this allows auxilary lamps with all parks, low, or hi. ---OEM allowed fogs only with low beams -replaced #30 & #87 wiring with 12 guage 2. Fog relay output redirected to DPST relay ---wiring--- 30-from fog relay output 85-from hi-beam wire 86-ground 87-to driving lamps 87a- to fog lamps