348 and alternator query......

If you can get it mounted and the wires hooked up in the right spots you can pretty much put any 12v alternator on any 12v system and it will work for you.
The issue may be what rpm the alternator is designed for. Ferrari changed alternator brands during the production because the original was failing due to how fast it was being spun.
Of course things have come a long way in 25 years and it may not be an issue with today's alternators.

 

Your description of the lights and AC panel sound like the new alternator does not have the capability to supply adequate current when fully loaded. This will in turn pull the system voltage down causing weird things to happen such as lights to be dim. I suggest you contact the mechanic that installed the replacement and get the part number. With this information Google it and get the specs. Compare this to the original alternator, my suspicion is the new alternator is underrated ( hope I'm wrong ). Also I would get the failed alternator rebuilt and reinstall or keep as a spare.

 

I have installed an alternator from a Daewoo Lanos - works briliant and is easy to mount. Mine had the old nippendenso alternator original.

 

What I would do is measure the system voltage with the engine running and everything else off ( lights, radio, AC, etc) Then turn on devices until the lights and AC begin acting as you describe in your original post and measure the voltage again. Both readings should be virtually the same, if not I suspect the alternator is not supplying enough current. This is assuming the belt is not slipping or a loose or faulty connector where the wiring was disturbed during the changeout. Since your electrical knowledge is limited it might be best to have someone run this test for you.

Best Wishes,

Brewman

 

You're chasing a lot of things.

Did you check the battery? A shorted internal battery will cause all king of headaches, and are fairly common. Any decent auto parts place can test an alternator and a battery for you. Batteries cannot be accurately tested without loading. Start with the basics:

1. Battery good?
2. Alternator good?
3. Good connections to key points? I.e. What is the voltage drop from the battery to the fuse box?

These cars are notorious for bad electrical connections, and for flaky AC control systems.

Flickering lights sound like a bad ground. You'd have bigger problems that lights flickering if you were losing power like that.

My guess if you have several electrical gremlins you need to sort, many of the bad connector variety.

Good luck!

 

Ebay item 261703129287

 

If you go for this option, let me take some pictures of the modifications needed