Hello again, and another question, or two...

1994 Vovo 940 Wagon

First, when I first bought this car, it had really bad brakes, they grabbed, and seemed warped, so I had them turned, and I replaced the pads, but they still grab and make a "thump" noise accompinied with a heavy pulse in the pedal... any info will help!

Second, It has a really bad rear gasket, and leakes oil like a sieve, however, the other day I got to thinking, the oil that it leakes is dark black and dirty, but the oil I put in it is clean, on the (dipstick) I also cleaned the flame arrestor out (it was completly plugged) and I was wondering if the oil that leaked into the transmission "bell" housing before I fixed this, is now flowing out, which seems to happen if you slam on the brakes, or after you turn the engine off after it is warm is not the car leaking anymore, just a reserve from before...

Third, the brake lights do not work, and I am unsure why, I know that the bulbs are ok, and I took the connector off of the switch on the pedal under the dash, I tried using a multimeter to see if there is any juice going to the connector, and there is none, what am I missing???

Please Help me!!!

Thanks, TWilson