Re: Don’s 1937 (120) 138CD Deluxe Touring Limo

Posted by DM37 On 2024/4/7 17:01:28

Sounds like you have an intermittent on the backside terminals of the gauge, or its connection back to the generator/regulator. Go around all the generator and regulator contacts first, wiggle them by hand...look for degraded fiber insulator washers where they appear...see if you find the culprit...then do the same in an upside down contorted position under the dash for the gauge connections and any wires that emanate from the gauge...but on their "other end" for the same conditions.

The hard high ammeter transient reading right after starting is as you surmise...a hard current draw sourced from the generator as the battery does a quick trim up until the regulator kicks in and it regulates in a "bang/bang" lower current on/off pseudo-trickle charge to finish replenishing the battery.