I would say there is probably a broken wire somewhere (maybe a fuse in the
rear) and when the radiator fan is triggering it is back feeding and
powering things up.  You just discovered a new mode!

Ken

On Thu, Jun 7, 2018 at 2:07 PM OlRivrRat <OlRivrRat@comcast.net> wrote:

>         87 Westy with Factory AC > When AC Switched to ON Neither AC Fan
> or Rad Fan come On >
>
> But if AC is left ON, both Fans will work if Van is warmed up enough to
> Trigger Rad Fan ~

--
Thanks,
Ken Wilford
John 3:16
www.vanagain.com