Here’s the fifth video in the Project Slowflake series, where I went over to Brian’s for two days to hook up the battery to the power pack with the aftermarket wiring harness, and test it out to see if it would run. When we sorted that out, we cracked the battery pack open and pulled the wiring harness apart from there. With that done, we made a bunch of measurements and started planning out how to organize the batteries in the truck.