Sounds like they rewired more than the gauges. Probably a short in the wires or the crossed something they shouldn't have messed with. Might want to take it back and have them fix the issue.
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Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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