Well, I don't even know how to tell this one. I could go on for hours, quote philosophers, sing psalms and still not tell the story.This customer I've had for about 4 years put this system for 960.00 in 1973. Still had the original plan and contract. It uses a FIMCO hydro indexing valve. Four zones. I hate these things more than any irrigation product I know to exist. I begged them when they first called to abandon the system and put a new one in. They knew the system was bad and were willing to live with the best I could do. Elderly couple, husband has alzheimers, fixed income, you know the story. Anyway the hydro indexing valve went out. I told them the best solution was to replace it with four valves and run new wire to the clock. She was uptight over the cost so I (against my better judgement) said I would try to find a replacement. I called an old old secret supply house to see if they had one and unfortunately they did. Last one in Dallas. Sipping beer Anyway I'll stop my story for now and post pics. My assistant Henry age 22 did all the work and took the pics. One tip-the original FIMCO was installed upside down.