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how hard the drum is to get off kind of depends on how worn it is inside.. if it is worn there could be a bit of a lip that will hang up on the shoes when you try to pull it off. there is an adjusting wheel accessible from the back side that should allow you to adjust the shoes to give more clearance. recommend getting a drum hardware kit as well as the new shoes.

coil is possible - due to waste spark system, the specific pairs 1&2, and 3&4,share coil halves. Doesn't mean somethingelse might not be going on..... find a youtube video on subaru rear brakes - most newer models have a small drum that has the parking brake shoes, surrounded by the disc part. Your car 'may' be old enough to have drum rear brakes. Someone else will chime in with better info I'm sure.

You guys are nuts - in a very good way! Love seeing your adventures and make-it-work attitude. It's refreshing to see someone get out there and have fun without spending a ton of money or having to have everything be perfect (I struggle with this a bit - "oh I can't do x to my car because I'd really like to do y and z at the same time", so I end up never doing anything ) Keep up the great work, I enjoy your most excellent write-ups!

Thank you. I will make that change. I owe you one!

Yes, 1st thing. I found this on the web: https://www.youtube.com/watch?v=p9o8kWUYew4 Sure enough the unlock switch was completely off the circuit board. Fix or replace. I'll try to fix it first.

The P)420 code can be eliminated by the spark plug fouler modification. It places the rear O2 sensor further out of the exhaust stream to reduce the voltage sensed ending the code. I've fixed several Misfire codes by putting in used OEM coils from a pull and pay yard. Make sure the wires are OEM or NGK.

The Brighton was a drum vehicle. Used a lot as a fleet vehicle. Look for exhaust leaks before the first cat,. Is a possible cause. for 420. Clear codes and swap wires to 3 and 4 and see if codes follow.. O.

Speed sensor is built into the speedo head. It has 2 wires coming out of it, One yellow/red, the other Black. 2 pole "T" connector (black) should be able to find it hanging under the dash connected to nothing. If you are using OBD I harness it won't matter, but if OBD II it will cut out at 4k rpms without a speed sensor signal.