I've got a stock Curtis 300amp 1206MX-1120 36v controller part#609083 for EZGO PDS w/ a high-low speed chip. Upgraded to an Alltrax so don't it now or need chip. Controller works fine, never had any problems with it. Chip is wired to a toggle switch so you can flip it to high or low speed. I had switch mounted to top of controller cover. Asking $280
http://tinypic.com/view.php?pic=xauqkn&s=8#.U4976FVdXUc
http://tinypic.com/view.php?pic=2zpt...8#.U498KFVdXUc
http://tinypic.com/view.php?pic=2hro...8#.U498UFVdXUc