After I had a control box fail, I ran a spare wire from the foot switch down to the solenoid on the unit. I crimped an end on it, and then just taped it up and left it loose. Did the same at the foot switch end, and also ran a spare to the fuse block to supply 12V to the foot switch. All the solenoid needs is 12V to operate, so I can still get the OD to engage if the box ever takes a dump again. The split shifting was fun for the first 5 minutes, but I just use mine for OD now! Good luck, and you did a super nice job on the install.