Pinnacle,
I know it is hard to test when equipment is on the machine and in place, but sometimes testing individual things you remove doesn't show the problem in the wiring it is attached to. If you test on the machine at the points I suggested, you should spot the problem whether it's in the wire the electrical unit or the power source. You need to make sure you test for 12 v, nothing less, at the points indicated, like into and out of the relay to be sure each is working properly. You will get through this, just be patient and don't give up.
Spudhauler & Bordercollie,
Well, many, many thanks are due. You saved me the cost of asking the dealer to troubleshoot this which I am certain would've cost dearly $$$$. I took your info, and checked as outlined.
What I found after reviewing the electrical schematic, was that the RG line eventually was tied into the alternator fuse within the harness. I could've seen this before on my copy of the drawing, BUT I did not now that the RG line should be powered 12V all the time when the switch was on, and when testing at the relay plug ( I don't confess to be hugely electrically inclined but can work out most things with a little guidance ). When I tested that point, I found less than 12V, but not zero. I then checked the fuse for the alternator and found it was partially burned, but not completely, hence why the full 12V's was not getting to the relay. SO, changed the fuse for the alternator at the fuse block, went for a ride to heaterup ( doesn't take long as it is very steep and hilly where I am ) and BINGO ! fan came on, temps on guage never went above 3/4 hot, and then came down to just above half way on temp guage. Added point too is this explains why over time the battery seemed to be slowly going dead as I am not often running lights which would've drained it quicker and pointed in that direction.
So, HUGE thank you to you both, I really appreciate the persistent support from the forum community, it has made a big difference in my owning happiness and experience, and I do like to fix things myself if at all possible. It always ends up being a good learning experience in some way big or small.