If you monitor pad wear/thickness w/ frequency (as should be done)... you can eliminate need for sensors all together. Simply cut each lead up near plug and short them out (just twisting bare wires together, either solder or use a crimp terminal and then heat shrink tube to seal from elements). Thus you remove all worries of idiot wear light from sensors and not need bother with replacements. Savings realized should promptly be applied to garage beer fund (preferably mine)
Good luck
