April 16, 20215 yr I don't want go into the WHY of this, but on the weekend I may have to reinstall a Byd BMS and Bmu as shown here The BMS is the wider bottom box, the Bmu is the smaller box and sits between the BMS and the goodwe. I've got most of the connections figured out. The coms cable between the Bmu and the BMS is missing but I believe that's rs233, easily obtained. I have the cable that runs between the bmu and the goodwe. Then there's the cable that comes out of the back of the Bmu. (see picture I attached) I think this is power. What else could it be? So what do I connect that to? The splay between the two connectors is not wide enough to go across the battery terminals - or there was another piece of cable involved. Any advice will be gratefully received.
April 16, 20215 yr Author Also I assume I change the battery settings (which I did record) before connecting the battery to the goodwe
April 20, 20215 yr Author OK... so eventually the BYD hardware was reinstalled and the technician who did the job was kind enough to fill in the blanks in my knowledge.
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