Only 80-84 vans have the brake failure warning setup. These use 3 wire switches to supply the signals to the dash warning module and the rear brake lights. 85-91 vans use 2 wire switches, only for the rear brake lights. For some reason new switch quality seems low and the supply of new 2 wire switches is even lower. Mark
SDF ( aka ;jim lahey' - Scott ) wrote: > re this brake warning light module K ... >................. > > Obviously the swtiches , one or both I imagine, turn on the brake lights. > the 'other function ' is for a legally required brake failure warning light > in this system I'm pretty sure that if there is a significant difference > in pressures between the two circuits > ( like say a rear wheel cylinder is leaking badly ) .. > the two brake light switches tell this info to the module .. > the module sees 'no pressure in one side' compared to the other > circuit. thus turning on the warning light . > > |
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