The last few days I've been struggling to get my head around the BMS again. Although it probably won't be able be able to keep the pack balanced it's a good idea to have it working as I can use a simple Bluetooth dongle and App called LeafSpy to monitor the voltages of each cell. Having the BMS working means I'll be able to see if any cells are out of balance and if necessary I can intervene manually. I really should have had it sorted months ago but I knew it was going to be a pain so kept putting it off. I had it connected and working a couple of years ago on the bench but that was with all the modules in one place. Now I have some in the front, some in the fuel tank area and some in the boot so it's not so simple.
During the week I spent several evenings working on it and then pretty much the entire day today soldering testing, pulling apart and resoldering cause I messed up.
This was the mess I was in earlier.
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After many cockups, a few poor decisions and some generally dodgy workmanship I think I have it sorted.
Some time ago I made up a spreadsheet to give me the expected voltage at every connection for any given cell voltage. I was able to test all the voltages and even discovered a fault in the spreadsheet so tomorrow I'll sort out a 12V supply for the BMS, hook up the CAN leads and hopefully see the condition of the battery pack.
Wish me luck