Went to three parts stores, three separate machines, but ALL THREE reference an alt that has 4 wires to connect. Two red screw connectors, plus a red and white small connector that none of my three alternators I've used have.
Tried on all three machines, even used a new off the shelf alternator but all fail immediately. I'm pretty sure they aren't all bad, but the machines don't seem to have the right info on our alts.
Anyone gotten a good alternator test?

 

i just put my multi meter across the battery terminals and set the meter to read volts, should be around 14v if the alternator is working and 12v or lower if it is not working while the vehicle is running.

 

Sorry I will be more specific. I want to test it before it is installed in the car and I want to know how many amps it puts out

 

You'd have to find somebody knowledgeable enough at one of the stores to have a work-a-round for their testers. Not likely to happen and most folks just buy one close to specs, install untested and have no issues. Option may be to find a local elect shop selling alts who may be able to test prior to purchase.
......