Chosen Solution
As soon as the system gets electricity, the horn sounds in an off and on pattern. How can I stop this and install the battery. Alternatively, where is the horn wire to disconnect it?
Answering my own question: Hook up the battery, then use the remote (car alarm button) to turn off the horn.
If the beeping persists because your key fob does not work or has a low battery itself, endure the beep until you can start the engine of your vehicle.
