P0343 after Cat meltdown

[Troy Nicks]

Installed some gauges and forgot to reconnect the left bank ignition coils. Hard to start and ran rough but thought the PCM was relearning or something. Took a little test drive but still rough (I'm here to tell you it'll do 100 mph on four cylinders, with a Maggie pushing it.) Tunnel felt hot when I got home, so I looked under the car. Yikes! the right high-flow cat was red hot. I know, Dumb and Dumber ....

Found the unplugged connector, then it ran fine. Had to replace both cats, heat gutted them. Problem is it's thrown P0343, Camshaft Position Sensor - High Voltage, ever since. Takes an average of 3 tries to start it, apparently because it's getting the timing from the Crankshaft Position Sensor now and there's a 50-50 chance on any given crank cycle it'll "guess" the timing at 180 deg. off. Once it starts it runs great.

Replaced the camshaft position sensor - no change. I didn't think to check the wiring harness connecting to the sensor when I had the blower off. Can't see any burned wires around the headers, but my tuner sources tell me a burned wire somewhere is likely the problem.

Any thoughts about where to look next?

Thanks