HELP NEEDED! EB FORD

DOES ANYONE KNOW HOW TO CONNECT AN AFTERMARKET ALARM TO AN EB FORD BUT STILL USE THE FACTORY FOB BUTTON REMOTE?
ALSO,
ANY INFORMATION ON HOW TO EXTRACT ERROR CODES FROM AN EB FORD. DOES SOMETHING NEED TO BE BRIDGED ON THE PLUG?
ANY HELP WILL BE APPRECIATED.
ALSO,
ANY INFORMATION ON HOW TO EXTRACT ERROR CODES FROM AN EB FORD. DOES SOMETHING NEED TO BE BRIDGED ON THE PLUG?
ANY HELP WILL BE APPRECIATED.