Can I? Alternator question...

My second alternator is run on a home made alternator setup and the alternator was a used 19j alternator. I had the chance to pick up a brand new 110 amp alternator from a 1.5 dci clio but I'm under the impression that new alternators have voltage sensing on them? Would I have to run a wire from my battery and if so how would it react when I use my large switch that I have between my two batteries when I'm winching

Anyone?

Are you 2 battery's the same?
How big is the winch? When you say switch so you mean to wire them in Parallel or is one just for the winch and the other for the car and it doesn't charge until u flick the switch?

Why not just buy a Altenator upgrade kit that comes with the cables ect, what engine have you got?

Some modern car alternators are very clever indeed and Iirc take signals form the engine ecu?
I can tell you the one on my D3 does run at up to 15.2 volts.

200tdi disco engine in my 90. Currently I have a starting battery under the passenger seat which gets charged from the standard alt and I have a leisure battery which gets charged from the second alt. I also have a cable between both positives on the batteries that run through a manual cut off switch. If I'm winching for a while with light bars on electric fan on ect ect I switch it so both batteries are together, as everything comes off the leisure battery.

This also let's the main alternator help the second alternator.

At the minute the second alt is on its last legs and with a chance of getting an 110 amp alt I thought I'd try and fix that on.

I remember someone once doing a thread on an alt upgrade with a new rectifier and an in line resistor which I brought the stuff for but never got around to fitting.

This alt that I have has a battery + stud for the main out and two other small spade connectors. From what little knowledge I have on alternators I'd hazard a guess as one it the exciter wire from an ignition fed 12V feed via a bulb (which my current setup has) and I'd guess the other spade connector would be from the positive of the battery that is being charged (aux bat).

Winches are warn xd9000i and warn m8000.

Both pull pretty well for what I use them for.