So, as I mentioned , I had wired another 12v source to the fuel pump, bypassing all the connectors along the way. While fiddling with the fuse box assembly I noticed that the shrink tape that I used for a spade connection was very hot and so I took the tape off and realized that the connection had become undone and created a connection/no connection condition. Long story short , I reconnected everything back to the way it should be and all is well now. i do get 12v while cranking at fuse 11. This issue made me do a few things which were overdue. I cleaned up and secured connections to both the radio suppression relay and fan relay . Also under the suspension brace , passenger side, I did the same thing with the two large connectors and one four prong connector as well. I removed and cleaned all fuses in the fuse box, now my horn works!
What is still a mystery to me though is that the car started and ran for years with the fuel pump wiring modification that I did but will not do so now. Anyways eliminating the mod and reverting to the way it is supposed to be is working so I consider the start/no start issue fixed. Time will tell and thanks for the suggestions gents.