Power issues IH 1206 running BR7060/bale command plus

Hello all, we are running our BR7060 baler behind our IH 1206. They’ve worked together for years without trouble. But last hay season we started having issues with the monitor shutting off, actuator not extending/retracting. We’ve narrowed it down to a power problem from the tractor. We’ve tried new batteries, new alternator, redid ground wires, made a better ground from baler to tractor, monitor reads 12.8-14.2 V. But monitor still shutting off intermittently or actuator won’t cooperate. Husband got a brand new alternator (Duralast Gold) yesterday, along with new batteries. She wrapped fine a couple bales, then back to same old failures. Today he says the alternator light came on, on tractor. Been scouring this forum for ideas. Saw something from Mike10 about Delco alternators causing issues with the power to the monitor, but in JD tractors. Assuming this is an alternator issue, but what do we try that is better quality?

Power issues IH 1206 running BR7060/bale command plus