Bluefire

[BlackJohn]

I put the new alternator on and the same thing occurs.11.7 v at the battery and at the alternator. There are 2 wires, a red one and a white one. On my other bus i connected another wire to the back of the alternator but i can't remember what. Maybe to the ignition. I've done so many things since then. Like sleep. I can't remember.
I don't get any codes saying bad battery or alternator

Have to agree with Chris on the two wires that allow the alternator to be excited firstly. But they have to be on the right terminals, not backwards.
Aslo, this 11.7vdc, is that at idle? Increase the revs and see if that changes any because some alts just don't respond at idle speeds.
Keep the batteries charged up till you get sorted if possible and be good to the starter, don't overheat it with repeated starts without cooling off time.


John

 

[Dead pirate]

The cables are connected correctly. But on this alternator ( its 360a) it also has a spot got what in assuming to be a 5v ignition connection. I'm going to connect it to the ignition switch. That should do it. :fingers crossed. I just couldn't remember that that connected to. It should pump about 14v
Thanks

 

[Mountain Gnome]

I can't say how your bus (or my bus for that matter) is wired, but on some (smaller) vehicles a blown "alternator warning" light bulb on the dash will cause the alternator to NOT kick on.
If your "alternator warning" light does not come on when you turn the key from off to on (before cranking) that may be the problem.
Seems they commonly wired the vehicles with power from the ignition switch, through the bulb, to the alternator to signal it to generate.

 

[Dead pirate]

Hmmm. That i will check. Thanks