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Hummer Knowledge Base

The Hummer Knowledge Base

Fuse Chart for 1992 and 1993 Model Years:

Fuse Identification: Fuses are numbered 1-7 from left to right and lettered A-H from bottom to top. Fuse A-1 is in the lower left corner of the lower fuse box and fuse H-7 is in the top right corner of the upper fuse box. See Interior Fuse Boxes Illustrated.

Lower Fuse Box:
FUSE AMPS PROTECTS
1-A 5 Spare
2-A 7.5 Spare
3-A - Blank
4-A 10 Spare
5-A 15 Spare
6-A - Blank
7-A 20 Spare
1-B 5 Glow Plug Controller
2-B - Blank
3-B 7.5 Glow Plug Controller
4-B 5 Volt Meter
5-B - Blank
6-B - Blank
7-B 20 Engine Ignition Feed
1-C 5 Transmission Shift Lock
2-C - Blank
3-C 7.5 Backup Lights
4-C 10 Turn Signals
5-C - Blank
6-C - Blank
7-C 20 Heater
1-D - Blank
2-D - Blank
3-D - Blank
4-D 10 Lighter
5-D 15 Stop Lights
6-D 15 Hazard Lights
7-D 20 Horn
Upper Fuse Box:
FUSE AMPS PROTECTS
1-E 5 Spare
2-E - Blank
3-E 7.5 Spare
4-E - Blank
5-E 15 Spare
6-E - Blank
7-E 25 Spare
1-F 5 Spare Circuit - Lights
2-F 5 Panel Lights Dimmer Module
3-F 7.5 Front Parking/Running Lights
4-F 7.5 Rear Parking/Running Lights
5-F 15 Trailer Lights
6-F - Blank
7-F - Blank
1-G 5 CTIS
Key Buzzer
2-G 5 Gauges
3-G 7.5 Spare Circuit
Ignition ACC, Rear A/C
4-G 7.5 Radio
5-G - Blank
6-G - Blank
7-G 25 Windshield Washer/Wiper
1-H 5 Underhood/Trouble Lights
2-H 5 Radio Memory
3-H - Blank
4-H 7.5 Spare Circuit - Battery
5-H 15 Dome and Courtesy Lights
6-H 15 Fog Lamps
7-H 25 Trailer Brake Controller

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