But, when I hooked up the completed panel the meter measuring the total battery pack voltage went poof! So I bought another meter one that did not require a separate voltage supply but, one that could read 30 to 90 volts directly. With a new replacements for the 12 volt digital panel meter and a proper 90 volt digital panel meter for the 48 volt battery pack voltage I sat down for what I thought would be a simple quick rewiring job. But I was wrong. Even though the displays of the meters match the others on the instrumentation panel the outside dimension of the replacement meter cases were just slightly larger than the meters they were replacing:
Which required me to spend a lot more time in the 95 degree heat trimming the openings in the panel so the meters would fit. So the quick rewiring job took considerably longer and was a little more messier than expected.