I have an extra webelectricproducts.com CHMSL flasher available for $25 - is not compatible with my 1989 MB 300E. Works fine in my Prius though. Also have a factory EV switch availabe for $40 - new, never installed. (I use cruise lever to activate EV mode) S&H is $4.95 - buy both and save . . . I can accept Visa/MC (I have a MB parts business - the Prius is my "business" truck . . . ;-)