<100CSQ>Front Brakes

[Brian McCarthy <bmccart3@ix.netcom.com>]

I have a 92 100CSQ which I bought in January with 50k mi.  So 
far, so good.
	I do have two questions about the front brakes.  The warning 
system started indicating that I needed pads shortly after getting the 
car.  So I replaced the pads (with OEM parts), but they didn't seem to 
be that worn.  The warning system still complained.  I took the pads out 
again, double checked the connnections to the harness on both front 
pads.  They were clean, tight and dry.  Just for good measure, I snipped 
the wires off the sensors and made jumper plugs to fit into the end of 
the harness, taking the pad sensors out of the circuit.  Same deal.  
Every now and then (like three times in a thirty mile drive), the 
warning indicator lights up!  What gives?  I hope to locate an 
electrical troubleshooting manual (like BMW offers, the best I've ever 
seen) to give me clues about harness connector locations.  I checked the 
FAQ file, and didn't see any reference to this problem.
	The other thing the front brakes do at highway speeds is squeak 
lightly every now and then *without* any pressure on the pedal.  As soon 
as I touch the pedal, the sound stops.  I don't remember if the original 
pads did this.  Again, I took them out, put Wurth anti-squeak on the 
pads, cleaned the caliper surfaces, etc.  Perhaps the piston is not 
retracting properly?  Anyone rebuild the calipers to solve this?
	TIA
Brian

92 100CSQ 60k
86 VW Syncro Wagon 180k
86 BMW 528e 128k
74, 75 BMW 2002 lotsa-k