08 Nissan Versa, No Start, No Comm with ECM After Front Speakers Install

hello please help me get my versa starting up ... i installed 2 component pioneers 6.5 in front doors and 2 4ways pioneers 6.5 on rear doors while battery is disconnected of course. And i just run the Amp power wire from the trunk thru the firewall without plugging it to the battery nor to the amp and did the same with the speqker wires on the passenger side from the trunk thru the car under the mat near the 2 right doors and going behind the glove box to the stereo but without plugging anything not the powered sub nor the kicker 300rms amp i have. i ony plugged the front read door speakers to my 2 din fhx 720 bt pioneer. and when went to plug the bsttery back i had to do some errands and finish plugging the amp and sub later on while the amp power wire that goes to the battety is covered with tape on both ends . the wouldnt start. nor communicates with any svan tool ive tried so far many expencive and unexpensive tools. none of them gave me a code.with a multimilter i checked pin 6&14 (Can bus hi&low) it has way too much resistance around 360 ohms... my car would crank forever but no spark no start all fuses and relays are good. and now i have a immobilizer light solid red when key to on position. i called a locksmith hoping he would have the fix for me by bypassing the immobilizer or doing a trick to revive the ecm and he was unable to. he said since thees no communication with the car i cannot reprogram you the keys nor ecm. ive gor 2 extra ecms from same year and model amd still no communication to reprogram any of these modules to the car vin and keys or vice versa. i unplugged the pioneer headunit and speakers and still same result. is there anyone with the right advice on how to check the canbus wires on this car probably the driver door harness or elsewhere cuz the car run fine with the headunit and oem speakers . and never started after speakers upgrade. i must have tapped on canbus wires while removing one of the door panels or somewhere sensitive... i also tried unplugging one module at a time untill i get back communication and nothing still ... please help <3Cheers

2008 nissan versa hatchback with regular key (not smart key) and key fob in a seperate black casing. without cruise control without abs . with factory alarmCheers

How did you run the wire through the firewall? Something got cut or grounded when you did that.

yo dude you the man ! after checking behind that rubber seal on the firewall i found this tick wiring bundle is cut and some copper is out touching the frameCheers

def a rodent or a big rat chewed my shyt up ughhhhh i remember i gently passed ut thru . it looks bitten all overCheers