Help 250cc Intruder interchangable parts

Hi,
Recent ride didnt go as plan. Bike broke down with a brand new battery totally drained
Towed it to a local shop and they have come back pointing to a failed Regulator and a Alternator.
The $ they want for these parts turned out obscene
$760 for the alternator and $350 for the regulator + labor cost
So this repair sits close to $1,250 (something I simply cant afford at the moment)

So thinking of bringing the bike home and do the work myself.

As part of sourcing a replacement regulator and alternator I noticed dramatic price differences between various vlc models (where the 250cc seem to be the most expensive)
So now wonder if anyone cold tell me why I need a regulator for specifically the vlc 250cc (and not being able to use one for other vlc models (such as VL1500 or DR650 etc) ?
Similar question when it comes to the Alternator/Magneto

Anyone know if/what parts that is interchangable in this space?

cheers

 

Thanks all for the input - Agree with the shop overcharging on the item (both items really )
I will pick up the bike from the shop and do some tests as per suggestion - just need to source a trailer or something now

 

Here'e another weird thing that happened as part of my break down.
Initially it simply didnt turn over when trying to start it (like the battery was drained to the point of not being able to crank the engine)
Bike was easy to jump start though, so trip continued.
Then it was noticed that break light and indicators didnt work anymore - Front light worked all the time though, and a mate told me that it appeared that the tail light was going on/off randomly (but we wasnt 100% sure (could have been the sun tricking the eye).
The trip meter also behaved strange, flicking rapidly at first then going blank.
The hand and foot break started to act like a kill switch at low speed coming to red light etc, resulting in that the bike had to be jump started at every red light/intersection when coming to a stand still.

It was decided to take it out on a stretch with no stops along to way to allow the battery to charge up - fine for a little while, until it started to backfire badly and finally die.
From there it was not possible to jump start it anymore - just dead.

Is it possible that a bad stator and/or rectifier/regulator could cause all of these strange behaviors?

 

Brilliant - thanks for the heads up - Have scratched my head on this thinking it was more to it than just the reg/rec and/or alternator.
And, yes = its a bummer how they hooked up the ignition to the head light with no option to turn it off - will start to look into changing this - but guess it could turn out messy due to all Suzuki proprietary stuff

btw. The fault analysis my64xr posted earlier is brilliant - Thanks!!!

With no service manual (searched for it a long time to no avail) any little help goes a long way for me with this little scooter.

cheers

 

That pdf turned out pretty useless - the other service manual links works, but is painful to read - prefer pdf format so I gain some control on what Im doing

 

Do you have this is pdf format you could pass on?