W123 PW Relay issue

[kdelacy]

Hello, I have a 1985 300CD with a power window issue. I've traced it back to the relay behind the instrument cluster so far.
As I understand this circuit from previous posts, and the electrical diagram in a Haynes manual, the electricity should flow to the relay from 2 sources. 30 amps enters the #30 prong and when the relay closes this 30 amps exits out the #87 prong heading thru fuses A and B in the fuse panel then to the PW switches on the center console. But in order for this to happen the relay must be activated by recieving electricity at the #86 prong. Thats my problem. I'm not getting juice at the #86 prong, and from the diagram I'm using it should be coming from fuse 4 in the main fuse panel. Well I have 12v on both sides of fuse 4, but only .3v at prong #86 at the PW relay. I did loosen up the fuse panel and verified the wiring behind fuse 4 is tight. My diagram shows no other gadgets between these two points...

ANY advise???

Thanks,
Ken