I finally installed my Stancore. I installed it without the L adapter, but the relay sits on it;s side. All wires reached easily and it has worked great for the past month.
I bought the relay a year and a half ago. When I bought my truck, I didn't know about this site or anything about diesels. The previous owner told me he thought the glo plug relay was going out. When it started getting cold, it was hard to start, so I foolishly had it replaced. Motorcraft part $85 Labor $50.
I watched him swap it out and and felt relay stupid. Next morning It didn't start any better. I then found this site and started asking questions. Found out I could have tested the relay in about 2 minutes. Also fond out haw to test my gloplugs. Turned out 5 were bad. 4 on one side 1 on the other. I Found instructions to swap out the glowplugs and did that. I also read about the stancore relay and ordered two of them. I think I paid bout $35 each. There was a discount for 2 of them. A couple of months ago, the truck started getting hard to start again. So I put in the Stancore. It has worked great so far.