Routed the ECU to live on top of the battery. Scrap the battery cover, you don't need it. After this photo, I scrapped it. It limits space, & simply isn't necessary. Note - the F4 battery is too tall for it anyway & it won't close. Additionally, w/o the cover, you can run the negative battery terminal right over the top of the battery & connect it w/o having to do any drilling in the battery tray.