No, they're not prone to failure. Especially if you put a new relay box on there and not a used one.
Have you checked the circuit according to the manual? It may be a grounding issue to the pump that is causing it to run an bypassing the relay all together. Gonna take some investigation with a meter. It may be the ECU that's faulty also, but not likely.
Thank you SkyDork
I have new, but similar, issues as before now.
Here's the Update:
So, I had to put my bike in storage while I sold my house and bought another one. I finally took my bike out of storage and decided to take it to a shop. Something I have never done before, and ultimately a big mistake because I chose the wrong shop. The damage that shop has done to my bike is outrageous. When the dumb@$$ at that shop found out I did not want them to fix my bike and that I was coming to pick up my bike, he literally ripped a handful of wires, about 10 from the three plugs feeding the fuel pump relay box, ripped out the fuse box, broke the mirrors, ripped the instrument cluster out, along with a handful of some other crap.
So far to the tune of around $2500. Yeah. Law suits filed and everything. Now I am back to trying to fix it myself again.
Now that I am back to the fuel pump relay, does anyone have a picture of the wire colors and which plugs they go into on the connectors? I have bought new connectors from Kawasaki, and new pins to terminate the wires. Although I can read a schematic, the schematics in the repair manual do not have a good depiction of 'where' each wire is in its respective plug. I am close, but I need a few more wires to be terminated before I can add the battery. Anything as simple as a picture of the plugs in place with the wire colors visible. Or, a schematic that has the wires and which plug, and location, they go. Honestly, at this point, anything would be a tremendous help.
What's in it for you? MONEY!!!
(I swear to god I will pay you - I'm sick of my bike being dead!)
I will send $20 via PayPal to anyone that will send me pictures that show what wire goes into what pin on each connector.
I will send $100 via PayPal to anyone that can help me successfully diagnose why the fuel pump would not shut off, as I expect once I get the wiring back in order, the same issue as before will return.