Yes I believe bypassing the AMp meter is a good idea as I understand it, for the meter to measure the current flow, it has to measure all loads. & when the AMp meter breaks, you have lost your circuit/ vehicle power.
The meter is in the dash, some have told me to just take the input & output wires and wrap them up to bypass the meter. I am not sure how great that advice is.
One thing that I have a problem with is the corrosion of the salt air. Every vehicle (old/used) that I have owned has needed the grounds to be cleaned (I then covered them in Di-electric grease as an insulation from the air).
The resistance goes up with the bad terminals, bad grounds of the circuit, the voltage stays the same (12 volts) so the current goes up accordingly, sometimes past the nominal output of the alternator so the load draws current from the battery.
People in town all the time are replacing their batteries when their alternator is over taxed and the electrical circuit grounds are corroded.
I am under the belief that this is not a problem on the west coast in California, but here, the salt is so bad everyone loses their clear coat of paint and everything rusts out.