Vintage iron
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A customer approached A&H Recon. Shop about 12V electrical needs in his M931. He was planning to use the M931 to plow his commercial contracts. I converted his plow pump to 24V to get him though the snow season. At the end of the season I designed a solution to his need for 12V and 24V power. He needed 12V power for a radio, charging ports, power for sander and lighting. The truck and plow pump will continue to run on 24V. The simplest solution was just to add a complete 12v system. I used a 22SI alternator, build custom brackets to mount it and put two group 31 batteries in the passenger side box.
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