I have an 05 S4 cab and the idiot who put the new pads and disks on it before I bought it, trapped the pad sensor wire between the caliper and the pad so it wore through. My question is about how the sensors operate in normel conditions. Is there a complete circuit which gets broken when the pad wears down, or when the pad wears down, does it then create the circuit? What I want to do is bypass the warning light but I dont know if I need to stop the circuit or connect it. Thanks.