B7800 40 amp alternator wiring???

[Dixie B6000]

Ok i bought a new denso 40 amp alternator off ebay for my B7800. I saw a thread last week somewhere on how to wire it up and for the life of me can't find it now. I've fabricated up everything else just need to wire it. If someone could give me some insite or a link to a thread on how to do it and/or some PN's for a wiring harness etc... i would be much appreciative. Thanks

[KennyV]

There are only a couple ways to wire an alternator...
It depends mostly on the type of voltage regulator... is it internal or external?
'Then how many connectors are there on the alternator?

KennyV

[Dixie B6000]

It has a internal regulator. Already took the factory installed external regulator off. The denso alternator has a terminal which i know goes strait to starter. It also has a T connector which has two wires. Not sure were these wires go. Im sure one is for the battery light but not positive which one and where to hook into the harness plug that the regulator used. Also there is a relay used in the plug and play wiring harness kubota sells. (Harness is $100 from my kubota dealer).

[KennyV]

The Top of the "T" #2, is Switched 12volts... you (can use a relay if you like) ... it's not necessary as it will be switched with your 'key switch' anyway, and will only draw 1/4 of an amp when on...

The leg of the "T" #1, is the indicator light ...It connects to a switched 12 volt supply for an indicator lamp...
(if you have one).

That alternator also has a test point labeled F where you can ground the field for a full field test...

The B Large connector #3 is as you say routed to the starter Solenoid Battery post... You SHOULD put a 50 Amp fuse, circuit bkr Or fuseable link in that run...

Nice little alternator ... KennyV

[Dixie B6000]

KennyV you are the man. That is exactly the answer i was looking for. I just bought a fusable link at the parts store about 30 min ago :-) now i just gotta figure out where to hook in the #2 (switched 12 volts). Not sure exactly what the purpose of it is.

Thanks Tremendously!!!

[Airmale]

any pics of this install? denso part#? I would like to do the same thing.

[7800DUDE]

I did an upgrade on my 7800 5 yrs ago I got everthing from the dealer was like 130.00

[Dixie B6000]

Airmale, its better to just get the kit from the dealer. Its a bit of a headache wiring it up and is gonna cost you close to the same as fabricating it all up yourself. I think the kit was about $20 more after all said and done!