If you look on this URL (page from the Sun FEH), it should be
readily apparent and help you to find it.

http://lios.apana.org.au/~cdewick/sunshack/data/feh/1.3/wcd00015/wcd0158a.htm

btw, it appears that Craig has the full Sun FEH online...also available
if you register with mysun.sun.com, I think (from memory)

In some email I received from Michael Bartosh, sie wrote:
> Where is that jumper?
> 
> Thanks-
> 
> -mab
> 
> 
> On Monday, October 29, 2001, at 12:44 PM, Hauke Fath wrote:
> 
> > At 16:36 Uhr -0600 25.10.2001, Michael Bartosh wrote:
> >> I have an IPX w/ no head... the HD spins up, although I don't hear any
> >> boot sounds. I'd eventually like to get netbsd on it.
> >>
> >> So I thought I'd connect with a Mac running ZTerm, something I've done
> >> with other unix boxes before. There's no kb or mouse plugged in- I 
> >> tried
> >> an Apple serial cable, told zterm to listen on the right port @
> >> 96008n1.. and - nothing.
> >
> > I've done this many times. Make sure the Sun's serial interface is 
> > jumpered
> > for RS423.
> > 	hauke
> >
> > --
> > "Those who are willing to sacrifice essential liberties for
> >  a little order will lose both and deserve neither."
> >                                                    Benjamin Franklin
> >
> >
> >
> 
> 
> 
>