I hoping someone here can help me out a bit with an overcharging issue. First off it is a 1976 FJ40 with stock components. It has the altinator with 2 pin plug and battery connection. The regulator is 3 wire type. I have had the altinator checked and it is ok. I replaced the voltage reg with a new electronic one from toyota. I had this checked too and it is fine. I have checked all wiring from the alt to the regulator and it is good. I have tested the plugs and get the right results ( E= ground, IG =13V, etc.) When at idle with everything hooked up I get 17V which I know is too high. If I remove the regulator I get 13V (battery voltage). I don't know what to try next so I hope that is where someone on here can help. Thanks in advance.