I just spoke to a guy named Rick at
www.americanpowerinc.com tech support.
He knew exactly what's up. I told him about the cheap A$200.00 ALT / used BE
trick and I asked about just adding a DCUPCON and it was all shoot down and quickly at that.
He was not trying to "sell me " either! As a matter of fact I asked him if they wanted
to quote a replacement system and he said "no".
Those DCUPCONs are very expensive, a 50AMP DCUPCON is $2200.00 msrp.
The cheap ALTS and used BE's on EBay that are 12 years old he said "You'll be sorry".
There is another angle worth looking at and that is the 24V to 12V A/C conversion.
As I typed past, the parts I think will be about $425.00, now you need to do
a big ALT upgrade, I have not done that math yet but if a 160Amp unit
will work then upgrading our ALTs keeping the TR in place may be the
cheap way. I have a call into an A/C shop that deals w/ Red Dot a lot, I
expect an answer today as to weather or not only fans and clutch coil
need to be replaced to switch the RD-2-4617-0 system over to 12V.
There gonna look at the blueprints I am told.
(Those BE's on Ebay are 12 years old and were used on school buses
and I believe they were removed because of a recall on the buses
involving them. If you staying around town they might be ok, if your
gonna do some driving, not advised.)