On a recent camping weekend, the battery on the controller for the Lippert Multi-function receiver died, DUH! didn't charge it, needless to say spend hours trying to locate an old style charging cable. My question is can manual override switches be installed on the circuits that do not have manual switch connections? The slide, outside light, and awning have the manual switches. I just don't want to get stuck in that position again. Thank you in advance for any help.