Section 7 · Pages 286–342 (57 pages)
Electrical
From the 1952–1954 GMC Truck Models 620–980 Maintenance Manual
Eight sections: wiring and miscellaneous electrical (wiring diagrams with wire color chart, junction panel, circuit breakers, horns and relays), battery, starting system, ignition system (distributor, coil, condenser, spark plugs), generator, regulator, lighting system and electrical specifications. Delco-Remy units are covered in 6-volt and 12-volt form, with regulator and generator application by model and a light bulb chart.
Read this section free, starting at page 286What this section covers
- Wiring diagrams and wire color chart
- Battery
- Starting motor and solenoid
- Ignition system and distributor
- Generator and drive
- Regulator
- Lighting, switches and stop lights
- Electrical specifications and bulb chart
- Make
- GMC
- Vehicle
- Heavy Duty Trucks, Trucks
- Type
- Service Manual
- Models
- Series 620, 630, 660, 670, 740, 750, 850, 920, 930, 950, 970, 980 (gasoline and diesel, incl. D, F, W prefixes)
- Publication
- Form X5404
- Pages
- 576
What’s inside
Front matter
- Introduction, Model Data and IndexesCover, warranty, title page with the Quick Index tabs, how to use the manual, the model data table of series, wheelbases and engine types for 1952–1954, serial number and parts identification plate locations, the section index and the alphabetical index.pp. 1–10
Maintenance manual
- 1Front Axlepp. 11–22
- 2Rear Axlepp. 23–156
- 3Cab and Bodypp. 157–180
- 4Brakespp. 181–256
- 5Clutchpp. 257–267
- 6Cooling Systempp. 268–285
- 7Electricalpp. 286–342
- 8Enginepp. 343–384
- 11Framepp. 385–388
- 12Fuel Systempp. 389–422
- 13Lubricationpp. 423–448
- 16Steeringpp. 449–476
- 17Transmissionspp. 477–552
- 18Propeller Shaftspp. 553–560
- 19Hubs, Wheels and Tirespp. 561–572





