This is another project from a concrete truck...concrete is a pretty strong alkaline, and can wreak havoc on electrical wiring and electronics. Here's an example... this is the cable that connects one of the remote control systems to a remote concrete pumping truck. It began having multiple intermittent problems. Upon inspection, I found lots of loose and rusted/oxidized connections, and one connection that was completely eaten away. After cleaning and repairs, all was well and back at work.
