As has been said
> Uh, it's a "control unit"! :-) No, really! Made by SMITHS and located up
> on the firewall on the inside above the passenger side cubby box. It was
> there at least in the '74s to provide the dreaded Federal
> seat-belt-interlock function,
While probing around in my '73/4 1500 I investigated the insides
of that thing. I circuit traced the whole thing and have it on paper.
If it is really any help to anyone I'll try to redraw it and put it into
a JPEG file. (the 1500 has been parked for 8 years so haven't needed it.
I beleive I saw a Factory Tech Note somewhere (someone's web
page) on how to test the thing, and which pins to jumper to outsmart the
Fred & Wendy Griffiths