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Hi all, sorry to jump on this but you guys seem to know what you are on about. I have just installed a NASA BM1, I have 2 110ah batteries connected in parallel (connected neg to neg), wired up correctly with NO other negatives on the batteries part from the wire to the black and white side of the shunt. When everything is turned off the battery is displaying discharge of 0.01amps and when charging it goes pass 100% (to roughly 105%). I have a 100w solar panel installed (it’s giving me 0.4amps of charge due to living in Yorkshire with crap weather this time of year). The neg from the solar is also Connected to the yellow end of the shunt. Should the neg from both battery’s be connect to the black and white end of the shunt or connected together with one wire going to the black and white end? Is all this right? Have I done something wrong. Thanks in advance everyone.