Reply to "Alternator - how do I check it?"

Trying to run the car without a battery is an old school test (go / no go). If you have any electronics like stereo , ignition box or what ever it may get damaged. A newer car with efi would be disaster!
Get the battery charged at a auto service center and load tested. You need to know the battery is still good. Get a digital volt meter , a hobby quality will work. ($10~)
Disconnected about 12 volt.
Connected but ignition off the same result. anything less you have a draw from a wiring error or fault.
Engine at idle minimum loads 13 volt , rev engine no higher than 14.7
Turn on all the loads is a test of alternator capacity . You will get less voltage than previous test with a stock charging system.
A charged battery but no charging system is not going to get you real far even with minimum loads. My guess 20-30 mile on a expressway.
My solution a expanded scale volt meter in place of the amp meter. A ford gen 3 alternator from PA Performance (95 amp) fits with out modification , a larger wire from alternator to the starter solenoid and a circuit breaker/ fuse (150 amp).
https://www.paperformance.com/...iew.asp?idproduct=46
Why would anyone install a Delco? They have a magic box to keep the idiot light working also.
The only problem was a cogged v belt slips at start up, a solid one works.