![How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports](https://s3.us-east-2.amazonaws.com/prod.mm.com/uploads/2021/05/17/1621292216_img_1717_mmthumb.jpeg)
How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports
![How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports](https://s3.us-east-2.amazonaws.com/prod.mm.com/img/projectcars/BMW_m3_fuses_battery_drain_pTuRjMW.jpeg)
How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports
![How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports How to methodically find the battery drain in our E46–and fit an Opt | BMW M3 | Project Car Updates | Grassroots Motorsports](https://s3.us-east-2.amazonaws.com/prod.mm.com/uploads/2021/05/17/1621281109_img_9187_mmthumb.jpeg)