Marker Light Question

[wxman1]

I've got a 69 C-10 P/U (or so the data plate says)
and I have been gradually fixing various stuff since I bought it about 6 weeks ago. I'm trying to get the marker lights on the left and right
front fenders working. I've searched for a
pigtail off the light wiring harness but I don't
see one for the marker light. I know this truck
has some 71-72 sheetmetal on it but I'm not sure
which pieces are original and which aren't.

This is a sideview of the truck
http://mywebpages.comcast.net/wxgeek/trk_side.JPG

The marker light in question is the one on the
front fender. I believe the marker light on the rear is just a reflector.

Soooo...Were the front markers on a 69 just a reflector and maybe somebody put a lighted marker
in its place? Possibly somebody put the wrong wiring harness on the truck? Any help is appreciated!

Jim M.