1wonton Posted February 4 Share Posted February 4 Would anyone have a wiring diagram for the 1920's Pierce Arrow truck? Trying to trace out the starter motor. ron Link to comment Share on other sites More sharing options...
Larry Schramm Posted February 4 Share Posted February 4 (edited) Don't know if this helps, but this is the closest that I have. Edited February 4 by Larry Schramm (see edit history) Link to comment Share on other sites More sharing options...
1wonton Posted February 4 Author Share Posted February 4 Thanks Larry; the truck is Model XB, 3 ton. Unfortunately, these diagrams do not cover this model. Link to comment Share on other sites More sharing options...
Larry Schramm Posted February 4 Share Posted February 4 4 minutes ago, 1wonton said: Thanks Larry; the truck is Model XB, 3 ton. Unfortunately, these diagrams do not cover this model. Would any of these be close? Link to comment Share on other sites More sharing options...
1wonton Posted February 4 Author Share Posted February 4 Doesn't look like it. The electric system is Delco. Curiously, the battery cable on the truck goes directly to the starter mooter and I can't find a switch in the circuit; just wondering how the starter is energized. Link to comment Share on other sites More sharing options...
Larry Schramm Posted February 4 Share Posted February 4 (edited) 5 hours ago, 1wonton said: Doesn't look like it. The electric system is Delco. Curiously, the battery cable on the truck goes directly to the starter mooter and I can't find a switch in the circuit; just wondering how the starter is energized. Here are some more schematics. The two earlier ones were wrong car. Edited February 4 by Larry Schramm (see edit history) Link to comment Share on other sites More sharing options...
1wonton Posted February 4 Author Share Posted February 4 Thanks again, Larry. The above diagrams show a starting switch in the circuit, this may be only schematic as I don't find one in my truck. I'm thinking the start switch must be internal, in the starter motor housing. I'll pull the starter nxt wk and further investigate. Link to comment Share on other sites More sharing options...
Larry Schramm Posted February 4 Share Posted February 4 4 hours ago, 1wonton said: Thanks again, Larry. The above diagrams show a starting switch in the circuit, this may be only schematic as I don't find one in my truck. I'm thinking the start switch must be internal, in the starter motor housing. I'll pull the starter nxt wk and further investigate. Recheck pictures. I added some more schematics. Link to comment Share on other sites More sharing options...
1wonton Posted February 5 Author Share Posted February 5 Ah, Ha; According to the literature the starter switch is energized when the mechanical linkage is engaged, that explains why I could find no exterior switch. Also helpful was the data on the fuse size and the fact that the system is positive grounded. Thanks again for your research. 1 Link to comment Share on other sites More sharing options...
Larry Schramm Posted February 5 Share Posted February 5 Fortunate to have the books. Happy to share the information with anyone. Link to comment Share on other sites More sharing options...
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