I need some help, my 300 just shut off yesterday. Restarted for about 15 secs and died again. Seemed to want to start after i released the key, but off again. Checked for spark out of coil, weak, yellow or none. Took out the ign switch and found someone has soldered a bridge between ign1 and ign2 terms on the switch. I replaced the switch, still wont start but now the Hot light comes on stays on all the time. key not even in. I dont know why this was done. The plug end still looks all ok. ANY ideas?