73 Dart Alternator doesn't show charge anymore.
Besides fit - which you can manage - the biggest problem may be field current draw.
Lets see if we can find some specs.
1973 2.5 to 3.1 Amps
Here's spec's for squareback that @Dana67Dart bought a couple years ago
6.2 amps Not sure if that was a revised squareback or not.
This is the crap shoot we have with the current offerings from parts stores.
Similar from a revised squareback. 6.8 amps
So 6 amps is 3 to 4 more amps than the wires and regulator was intended to handle.
It will probably be OK for a while, and then in my experience, the regulator may flake out, or if the wires and connections aren't great, they will get worse.
If you use it, keep an eye on the ammeter, especially after starting, and keep your hand held voltmeter handy.
It certainly should work.
Besides fit - which you can manage - the biggest problem may be field current draw.
Lets see if we can find some specs.
1973 2.5 to 3.1 Amps
Here's spec's for squareback that @Dana67Dart bought a couple years ago
6.2 amps Not sure if that was a revised squareback or not.
This is the crap shoot we have with the current offerings from parts stores.
Similar from a revised squareback. 6.8 amps
So 6 amps is 3 to 4 more amps than the wires and regulator was intended to handle.
It will probably be OK for a while, and then in my experience, the regulator may flake out, or if the wires and connections aren't great, they will get worse.
If you use it, keep an eye on the ammeter, especially after starting, and keep your hand held voltmeter handy.
It certainly should work.