Problem with my 79 GMC

[wklink]

I am picking up a 79 GMC 1500 this week. 350/350TH.

My problem is that the truck won't start. I am guessing the starter solenoid is out but hope someone here can either confirm this or send me in the right direction. I have a lot of experience working on old Fords (I restore Ford Thunderbirds as a hobby) but my experience with GMs is pretty rusty-the last truck I owned was a 70-C10 back in 1984).

The truck seems to have either an ignition or a starter problem. The lights come on in the truck, the radio and all the signals and stuff works but when I try to start it nothing happens. The battery is new, I also hooked it up to my 62 T-bird to make sure that there isn't a problem there. There is not clicking or anything when I try to start. I am guessing it is the solenoid on the starter but I am not sure. I figure the folks here are more knowlegeable about this stuff than I am.

I did do the search feature but didn't see anyone asking about an identical problem. If there is a thread please let me know and I will look there instead.

Thanks.