Re: 36-120 Voltage Question

Posted by Ross On 2020/3/17 7:27:29

Afraid I am not astute enough to fathom your tests other than you are seeing way too much voltage across the battery.

Optimas HATE being overcharged. Ideally you would see 7.2 volts across its terminals with the engine running at a high idle.

Agree you should check the grounding of the gen and reg; running an extra ground wire between the case of the gen and the base of the reg would be a good test.

What I can't recall just this moment is if your gen is a 3 brush unit in which case your 3d brush needs to be moved to lower the charging rate. If not, and the ground wire does not make a difference, then your regulator needs adjustment or is mismatched with your generator.