tbishur, not knowing the actual model or even the year of your trolling motor, all I can say is there are lots of trolling motor repair sites listed on the net. And you should have no real problem finding one of those places for parts. I've rebuild some seriously older trolling motors and found parts for them in some strange places once searching for them... Have you actually tried Motorguide for any assistance? Even if they don't have the parts anymore for your motor, they usually can suggest a place that can help with those parts. If worst comes to worst, an alternator starter repair shop/business maybe could help with the brushes... JMHO!
:joyous: