Section 10-J · Pages 381–398 (18 pages)

Wiring Circuit Diagrams

From the 1948–1949 Buick Shop Manual, B.P.S. 1.31 (without Body Group)

Chassis wiring diagrams by series, year and transmission, body wiring for each model, dome and courtesy lamps, and Estate Wagon tail, stop and license lamp wiring with wire colors and tracers. The 1949 central fuse block is shown. Photos of the 1948 and 1949 Model 76-C close the group.

Read this section free, starting at page 381

What this section covers

  • Chassis wiring by series
  • Body wiring by model
  • Estate Wagon lamp wiring
  • 1949 fuse block
Year
1948, 1949
Make
Buick
Vehicle
Passenger Cars
Type
Service Manual
Models
1948 Series 40-50-70 and 1949 Series 50-70: Models 41, 46-S, 51, 56-S, 56-C, 59, 71, 76-S, 76-C, 79
Publication
B.P.S. 1.31
Pages
459

What’s inside

Front matter

  1. 0Title Page, Introduction and General Informationpp. 1–9

Shop manual

  1. 1-APeriodic Lubricare Instructionspp. 10–16
  2. 1-BOther Lubricare InstructionsWhen to change engine oil and which grades to use, draining and refilling the rear axle, and lubrication jobs done outside the fixed schedule.pp. 17–19
  3. 1-CBearing Servicepp. 20–23
  4. 2-AEngine Specificationspp. 24–30
  5. 2-BEngine Descriptionpp. 31–42
  6. 2-CEngine Tune-Up and Trouble Diagnosispp. 43–47
  7. 2-DCylinder Head and Valve Mechanism Servicepp. 48–55
  8. 2-ECrankshaft and Connecting Rod Bearings, Pistons and Ringspp. 56–64
  9. 2-FCooling and Oiling Systems Servicepp. 65–70
  10. 2-GEngine Mountings, Flywheel and Housingpp. 71–75
  11. 3-AFuel and Exhaust Specifications, Description and Service Recommendationspp. 76–81
  12. 3-BFuel System Trouble DiagnosisDiagnosis of hard starting, poor performance and excessive fuel consumption, with a gas mileage test and expected mileage figures for each series.pp. 82–84
  13. 3-CFuel System Adjustments and Replacementspp. 85–92
  14. 3-DFuel and Vacuum Pumppp. 93–100
  15. 3-ECarter Carburetor and Climatic Controlpp. 101–115
  16. 3-FStromberg Carburetor and Automatic Chokepp. 116–129
  17. 4-AClutch, Syncro-Mesh Transmission and Universal Joint SpecificationsTightening torques and clutch, Syncro-Mesh transmission, universal joint, torque ball and speedometer gear specifications for Series 40-50 and 1948 Series 70. Dynaflow is referred to B.P.S. 1.30.pp. 130–131
  18. 4-BClutchpp. 132–145
  19. 4-CSyncro-Mesh Transmission and Universal Jointpp. 146–173
  20. 5-ARear Axle Specifications and Descriptionpp. 174–177
  21. 5-BDiagnosis of Rear Axle Noisepp. 178–181
  22. 5-CRear Axle Repair Procedurespp. 182–198
  23. 5-DRepairs Requiring Removal of Rear Axle AssemblyRemoving and installing the rear axle assembly, replacing the third member housing and replacing the strut rods.pp. 199–201
  24. 6-AChassis Suspension Specifications, Description and Service Recommendationspp. 202–210
  25. 6-BChassis Suspension Trouble Diagnosispp. 211–216
  26. 6-CChassis Suspension Repair Operationspp. 217–227
  27. 6-DWheel Balance and Alignmentpp. 228–235
  28. 7Steering Gear and Tie Rodspp. 236–247
  29. 8-ABrake Specifications, Description, Operation and Service Recommendationspp. 248–254
  30. 8-BBrake Trouble DiagnosisRoad testing brakes, outside conditions that affect braking, and a chart of brake troubles and corrections.pp. 255–257
  31. 8-CBrake Service and Adjustment Procedurespp. 258–263
  32. 8-DBrake Replacement and Repair Procedurespp. 264–269
  33. 9Frame and Bumperspp. 270–278
  34. 10-AElectrical Specificationspp. 279–283
  35. 10-BElectrical Trouble Diagnosispp. 284–289
  36. 10-CBattery and Cablespp. 290–298
  37. 10-DGenerating Systempp. 299–314
  38. 10-ECranking (Starter) Systempp. 315–333
  39. 10-FIgnition Systempp. 334–352
  40. 10-GLighting Systempp. 353–362
  41. 10-HSignal Systemspp. 363–374
  42. 10-IInstruments and Clockpp. 375–380
  43. 10-JWiring Circuit Diagramspp. 381–398
  44. 11-ARadiopp. 399–426
  45. 11-BAccessories Other Than Radiopp. 427–436
  46. 12-ASheet Metal Specifications and Descriptionpp. 437–440
  47. 12-BHood and Front End Sheet Metal Alignmentpp. 441–449
  48. 12-CReplacement of Fenders, Extensions and Rear Wheel ShieldsReplacing front fenders, Series 40 and 1948 Series 50-70 fender extensions and the 1948 Model 51-71 rear fender extension, and removing rear wheel shields. This is the last chassis section in this copy.pp. 450–453

Index

  1. 14Alphabetical IndexAlphabetical subject index with group page numbers, including entries for Group 13 pages that are not in this copy.pp. 454–459

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