PowerGear is now part of Lippert Systems. IMO, the best way is to access the website and call them. There is (or used to be) plenty of info on the website when PowerGear owned PowerGear. And...there was a real live person at the other end of the phone. Hope it's still that way.
g'luck!
BTW...my PowerGear slideout has no "stops" when extending or retracting. I found that out after popping a couple of fuses. So know I know to watch carefully when extending and flip the switch at the end of the travel (out) or watch the carpet (marks..indentations whatever) when retracting. Do not hold the "in or out" switch one second longer than you have to. If you do...with me, it's a popped fuse. With you..maybe it's telling you too much voltage at the end of the travel...you're not turning the switch off fast enough.
FWIW.