FYI, i had a problem with stalling, i replaced the crankshaft sensor but didnt' fix it. replaced the camshaft sensor and it worked fine after that. also had the mysterious no start problem. resolder the bad connections on the RCM but still no start. Now i find a bad relay. i am working on it now to replace it.
update on the relay. the one that was burned looking (A) turned out to be the coolant fan. FYI the relay at the opposite end is the horn relay. the second relay (B) turns on when starting the car but it will still start without it. Bottom line is I don't believe it is a bad relay. I found 2 more connections that needed soldering on the PCB. I will drive the car for awhile and see if I get the mysterious no start problem again. I will eventually replace the fan relay but I will wait for now.