Due to modifications and production changes there were a number of different wiring diagrams released for the the B10M Mk I. I can only assume this Service Bulletin applied from chassis number 503 up to the the release of Service Bulletin 3-37-24.
The table below is based upon information published in Volvo Service Bulletin 3-37-18. The Service Bulletin included the drawing 1190343 P01 for the B10M Mk I. This drawing is basically limited to symbols with component numbers and requires the component description to give meaning to the diagrams. The table below is sorted by the Component Number field and is used to interpret the component numbers on the drawings.
The letter and digit in brackets indicate the box where the component is situated. Connection points marked on the wiring diagrams with a brown arrow are intended for the bodybuilder.
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| Wiring diagram 1190343 P01 for B10M Mk I from Chassis No 503 through 4853. |
| Table Sorted By Component Number | ||
|---|---|---|
| Number | Description | Location |
| Battery | G2, G3 | |
| 6 | Connector, 6-unit | |
| 12 | Connector, 12-unit | |
| 20 | Connector, 37-unit | |
| 32 | Circuit card, electrical distribution centre | F3 |
| 33 | Circuit card, indicator/warning lights | A2 |
| 34 | Connector | F3 |
| 37 | Terminal, earth connection | |
| 52 | Fuse holder, 2-unit | G1 |
| 53 | Fuse holder, 3-unit | G3 |
| 60 | Fuse holder, 14-unit | F1 |
| 100 | Switch, headlights | K2 |
| 101 | Switch, fullbeams and dipped beams | B1 |
| 115 | Switch, instrument panel light | C1 |
| 119 | Switch, windscreen wipers | B1 |
| 120 | Switch, windscreen washer | B1 |
| 123 | Switch, heated rearview mirror | K2 |
| 125 | Switch, exhaust brake | C3 |
| 126 | Switch, diff. lock, wheels, rear | C2 |
| 144 | Switch, main circuit switch at batteries | G2 |
| 147 | Switch, direction indicators | B1 |
| 149 | Switch, horn | B1 |
| 150 | Switch, starter switch | B2 |
| 151 | Switch, eddy-retarder | D2 |
| 153 | Switch, starter heater | C1 |
| 159 | Switch, bulb failure warning light | C1 |
| 160 | Switch, stop engine | C2 |
| 161 | Switch, cold start | C1 |
| 175 | Switch, level control | C1 |
| 176 | Switch, splitter gearbox | C3 |
| 177 | Switch, el. main circuit switch at batteries | K3 |
| 195 | Selector lever, Allison | K1 |
| 200 | Break contact, warning light, parking brake | C1 |
| 202 | Break contact, warning light, oil pressure | H2 |
| 207 | Closing contact, indicator light, diff. lock, rear wheels | J3 |
| 215 | Closing contact, warning light, tachograph | C2 |
| 216 | Closing contact, stop lights | C1 |
| 217 | Closing contact, reversing lights | J2 |
| 222 | Closing contact, warning light, temp. torque converter | H2 |
| 223 | Slip contact, horn | A1 |
| 233 | Closing contact, warning light, coolant | K2 |
| 238 | Closing contact, thermal | H2 |
| 248 | Closing contact, engine compartment temp. | H2 |
| 251 | Break contact, splitter gearbox | K1 |
| 305 | Relay, reversing lights | K2 |
| 306 | Relay, fullbeams | E2 |
| 307 | Relay, dipped beams | E2 |
| 309 | Relay, parking lights | E2 |
| 312 | Relay, starter heater | F3 |
| 316 | Relay, solenoid, starter motor | G1 |
| 320 | Relay, main circuit switch at batteries | G2 |
| 322 | Relay, coolant level | E2 |
| 323 | To flasher unit | K2 |
| 325 | Step relay, fullbeams and dipped beams | E3 |
| 328 | Charging regulator | G2 |
| 331 | Relay, eddy-retarder | J2 |
| 333 | Time relay, starter heater | E3 |
| 334 | Relay, horn | E1 |
| 342 | Relay, main circuit switch at batteries | H3 |
| 345 | Relay, start inhibitor | E1 |
| 349 | Relay, battery charging warning light | E1 |
| 351 | Relay, cold start | G1 |
| 354 | Relay, starting position | E1 |
| 361 | Relay, operation of main circuit switch at batteries | F2 |
| 383 | Relay, engine compartment fan | G1 |
| 381 | Relay, splitter gearbox | C3 |
| 400 | Bulb, fullbeams and dipped beams | K2 |
| 408 | Bulb, parking light (left, front) | K2 |
| 409 | Bulb, parking light (right, front) | K2 |
| 431 | Bulb, instrument panel light | K2 |
| 500 | Indicator light, dir. indicator, tractor | B2 |
| 503 | Warning light, oil pressure, engine | B3 |
| 504 | Indicator light, fullbeams | B2 |
| 505 | Warning light, battery charging | B3 |
| 507 | Warning light, service brakes | B2 |
| 508 | Warning light, parking brake | B3 |
| 512 | Warning light, temp. torque converter | B3 |
| 523 | Warning light, tachograph | C2 |
| 526 | Indicator light, eddy-retarder | B2 |
| 528 | Indicator light, starter heater | B3 |
| 530 | Indicator light, heated rearview mirror | B2 |
| 532 | Indicator light, reversing lights | B3 |
| 540 | Warning light, oil level | B3 |
| 541 | Warning light, gearbox temp. | B3 |
| 542 | Warning light, door brake | B3 |
| 543 | Warning light, lids, luggage and engine compartments | B2 |
| 544 | Warning light, engine compartment temp. | B2 |
| 545 | Indicator light, STOP, bus stop | B2 |
| 546 | Warning light, opening doors | B2 |
| 547 | Central warning for indicator and warning lights | D1 |
| 554 | Warning light, coolant temp. | B2 |
| 555 | Warning light, coolant level | B3 |
| 601 | Solenoid valve, diff. lock, rear wheels | J1 |
| 603 | Solenoid valve, engine stop | J1 |
| 629 | Solenoid valve, cold start | J1 |
| 642 | Solenoid valve, splitter gearbox | J1 |
| 643 | Solenoid valve, level control | J2 |
| 650 | Windscreen wiper motor | K2 |
| 651 | Windscreen washer motor | K2 |
| 654 | Starter motor | H2 |
| 655 | Alternator 60A/80A | H3 |
| 660 | Alternator and charging regulator 120A | H3 |
| 665 | Engine compartment fan | H2 |
| 700 | Speedometer | C2 |
| 701 | Tachograph | C2 |
| 703 | Tachometer | C1 |
| 704 | Pressure gauge, air | C1 |
| 706 | Thermometer | C1 |
| 707 | Fuel gauge | C1 |
| 753 | Speed sender, engine | H1 |
| 756 | Temperature sender, coolant | H1 |
| 757 | Fuel gauge sender | H1 |
| 758 | Speed sender, gearbox | H1 |
| 762 | Oil temperature sender, gearbox | H1 |
| 763 | Level sender, oil | H2 |
| 800 | Starter heater | F3 |
| 806 | Resistance | C1 |
| 807 | Eddy retarder control | D2 |
| 810 | Electrically heated air drier | J2 |
| 850 | Horn | K2 |
| 853 | Buzzer | D1 |
| 903 | Diode | F2, D2 |
| 903 | Shunt | G2 |
| 950 | Electric coils, eddy-retarder | J2 |
| 1002 | Cable harness, tachograph | C2 |
| 1011 | Cable harness, direction indicators | A1 |
| 1012 | Cable harness, windscreen wipers | A1 |
| 1014 | Cable harness, starting switch | A2 |
| 1030 | Cable harness, engine | H1 |
| 1033 | Cable harness, eddy-retarder | D3 |
| 1035 | Cable harness, diff-lock | B3 |
| 1039 | Cable harness, splitter gearbox | B3 |
| 1040 | Cable harness, frame | G1 |
| 1052 | Cable harness, dashboard - electrical distribution centre | D1 |
| 1053 | Cable harness, el. box | G1 |