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Western Star - fuse box diagram

avatar Jonathan Yarden Mar 25, 2021 · 5 min. read

In this article you will find a description of fuses and relays Western Star, with photos of block diagrams and their locations. Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.

Year of production:

Fuse and relay blocks

Western Star - fuse box diagram

Fuse location Ampere rating [A] Wire Code LN Function
1 10 BA3H-10 Start Switch
2 20 Bus Bar Par Lights
3 8 BA03Y-10 Headlight Switch
4 10 BA03K-10 Radio
5 20 BA03N-10 ECC Flasher
6 20 BA03K-10 Interior Lights
7 20 BA03N-10 Wiper Motor
8 30 BA03U-10 Brake Light
9 10 BA25A-12 Electric Horn
10 30 BA03T-10 Option Battery Fuse
11 15 BA03U-10 Tractor Markers
12 30 BA03B-10 Trailer Markers
30 5 Bus Bar ECC Battery
146 15 Bus Bar DRL Power
44 15 BA25A-12 ABS ECU Batt Power
45 10 IG03H-10 ABS ECU Ign Power
15 20 IG03K-10 Backup Lamp
16 30 IG03B-10 Option Ing Power
47 20 IG03H-10 Air Dryer
20 5 IG03J-12 ECC Lightbar
21 15 AC02A-10 Radio
212 25 Bus Bar Sleeper
23 20 AC02B-10 Htd Mirror/lighter
24 5 Bus Bar Wiper Switch
25 20 AC02B-10 Opt Accessory Fus
27 30 Bus Bar Cab Heater
18 10 Bus Bar RHS Low Beam
19 10 Bus Bar LHS Low Beam
29 15 Bus Bar RHS High Beam
28 15 Bus Bar LHS High Beam

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

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