Can't find any information on this. Every thread is on S4s. Has anybody done this? I think I read somewhere that it is easier because the plugs match or something...

I'm more interested in the pulley/mounting setup than the wiring. Does it require washers or anything?

 

Depends on the pulley you get. Most dual pullies are drop in replacements.

 

The FD alt mounts and plugs in just as stock- no special washers or anything like that.

The S5 pulley will have to be reamed/machined to fit on the new alternator's shaft which is slightly larger.

 

Okay so you just tension it up like normal and everything. I got a dual belt pulley for my alt now but it's on the FC alt still. So I buy a dual belt pulley or machine the fc one to fit and I'm good to go.

Last question: What pulleys are drop ins and which arn't? So people will know.

Thanks a lot guys!

(And so other people can search for this)
FD Alt Fitment S5 Dual Pulley Alternator S6