After cam swap and headers, P0030 O2 Heater control circuit, fuse blows immediately

[kgkern01]

I just finished up a cam swap, headers, new oil pump in my L86 Sierra, and now I am getting an O2 heater control circuit code P0030, and the fuse was blown.  Replaced the fuse, blew immediately upon turning the key on.  Unplugged both O2 extensions from the factory harness, immediately blows the fuse again.  Plugged the sensors back in, with no fuse, the tuner showed the O2's as not working at all, but when he drove it up the street and back after tuning out the basic cam related stuff like the VVT, idle, etc.  The sensors were reading with no heater circuit fuse, but offset from each other, one bank leaner/richer than the other.  I'm assuming the bad heater circuit may have something to do with that?  So I'm assuming a wire may have gotten pinched somewhere during the cam install and is grounding out with the immediate fuse blowing.  Does anyone have a wiring diagram or good tips or way to try to track this issue down?   The truck is drivable but obviously the tuner couldn't do anything with the fueling with the O2's reading inconsistent.  

Side note, I also show a "Freeze Frame" DTC of P06DB, but this is a brand new oil pump from the dealership and oil pressure seems good, initially 60 but it seems to settle back down to 40.  The tuner also showed a injector #1 open circuit code in HPTuner, but my scanner app isn't reading that and there are no #1 misfires.  Any help on tracking down these issues is appreciated!