Reply To: 1936 1602 v12 Not Charging: How to test generator

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Jon, this will be but little help:  Autolite acquired Owen Dyneto in the late 1930s but seems to have maintained the Dyneto part numbers.  An Autolite-branded 40300 will serve just fine, as it’s the identical piece of equipment.  Actually, in mid-1934, Pierce began using Dyneto starters and generators, replacing Delco-Remy units, but there are some original 1935 Pierces which had Delco equipment from the factory, including Paul Johnson’s very original model 845.

The regulators on 1936-38 Pierces remained atop the generator.  I’m thinking that someone substituted a 3-stage regulator for the Dyneto, and mounted it on the firewall as is the custom for virtually all 3-stage regulators.  I think you need to look at a wiring diagram and trace everything out.  Which generator (Dyneto 3-brush?) do you have?  Or did some previous owner convert the generator to a later 2-brush system in conjunction with the installation of the 3-stage regulator?  That is, a holistic approach to the charging system (generator and regulator) is required, including an analysis of existing wiring against the factory diagram.

And do you still have the Startix?  That unit senses a lack of signal from the generator and automatically engages the starter–to respond to a stall.