[cdowns]

coming from the master cyl there are 2short brake lines the go to the proportioning valve, a sort of rectangular shaped thing// there will b one wire conncted to a switch that senses the brake system failure mode// there is also a pin normally toward the front of the valve,it is sometimes covered up by a rubber bubble thingy//you take a clamp lenthwise and try to push the pin into the centering position to turn the light out