Ok, one of the things I tried was opening a second instance of fs2p5. It seemed to populate and I was able to assign components. May be worth trying.

You did a great job with the timers. I adjusted them a little to get a higher blink frequency and quicker advance to steady but you made it easy!

I am having two little issues. The low fuel light has a really rapid blink that is continuous if only one tank is low. It is continuous if both are though. Strange....

I am also having trouble getting the suction output to light at all. The test switch lights them up, but I can't get them working normally. Edit: The suction variable was not set correctly in 43.16. Works GREAT now!

Anyway, keep trying and good luck, sir.