51 servicar police model

[lronofri]

Really struggling to understand wiring? Staring from scratch and could use any help you guys can give me! Have a diagram with harness but believe its not for springer front end because it shows a terminal plate up front? Is there one up there or just under seat? Please if anyone has any diagrams or photos! of any part of wiring system all would be helpful and appreciated. Thanks Bob

[Rubone]

Use the wiring diagram for a '48 model. It stayed the same on 45s until '57. On your '51 the headlight bracket has some junctions as well as the two in the frame holes under the seat. A big twin has terminal boxes/boards but not a 45. Does it have a radio or radio generator?