Condition Price Qty  
Very Good $29.00
This is the original wiring diagram printed by GM for dealer mechanics. You can follow the wiring in your truck from bumper-to-bumper. It will help you to understand connector configurations, and locate & identify circuits, relays, and grounds. Although the schematic is in black and white, the color of each wire is noted. You will not find this diagram in your shop manual. The schematic measures 8.5" x 11" when folded up, and opens up to 11" by 38". The diagram pictured is an example of this type when folded, but is not the actual diagram for your vehicle. Buy now for the best electrical repair info - the factory wiring diagram.
"Cab, Engine and Chasssis Wiring - PE-3500(32) T-9338"
This item is original.
11.00 x 8.50 x 0.10 inches
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This diagram covers 1972 GMC class A P3500 motor home chassis. It covers the part of the motorhome manufactured by GMC and will not cover motorhome bodies. To verify that this is the correct diagram for your truck, you can check your VIN code. The 2nd digit should be a P for the forward control model, the 5th digit should be a 7 to indicate the motorhome chassis, and the 6th digit should be a 2 for the 1972 model year
1972 GMC Motorhome Chassis
1972 GMC Motorhome Chassis