Checking to see if anyone has added solar to a Lance 1181. If so, please give me some specifics......will probably post this over on the Lance forum too.
The voltage at the battery pretty much determines what the panel voltage is with PWM controllers. Since the commonly used lowest voltage panels are 17 volts, voltage drop from wire is not much of a concern, so long as the wire is rated for the number of amps that can be produced.