Electrical System
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15-01 ELECTRICAL SYSTEM

GENERAL

Early production Willys civilian vehicles were all equipped with 6-volt electrical systems. Later production Willys civilian vehicles were all changed to 12-volt electrical systems.

The majority of Willys MB and Ford GPW military vehicles were equipped with 6-volt electrical systems. A few of these vehicles did in fact have 12-volt electrical systems for use with special equipment such as radios and generators. Later production Willys military vehicles were all equipped with 24-volt electrical systems.

For a quick check to see which system your vehicle has, just look at the battery. A 6-volt battery has three cells with three filler caps. A 12-volt battery has six cells with six filler caps. A 24-volt system uses two 12-volt batteries connected in series.

As the electrical circuits remain the same, the wiring diagrams represent the 6, 12 and 24-volt wiring. However, bulbs and electrical components are not always interchangeable and a replacement item of the correct voltage must be secured.

We offer every part to convert your vehicle from 6-volt to 12-volt systems and 24-volt to 12-volt systems.

OEM equipment suppliers to Willys included the Electric Auto-Lite Company, the Prestolite Company, the Borg-Warner Corporation, the Wagner Electric Corporation and the General Electric Company.

Throughout this Group you will note that Willy Jeep Parts offers more new OEM parts and more rebuilt OEM parts than any other supplier anywhere!

TYPICAL ELECTRICAL SYSTEM

PART NUMBERS, DESCRIPTIONS, APPLICATIONS AND PRICES ARE SHOWN IN THE SUBGROUPS THAT FOLLOW THIS ONE.

CAUTION! Maintenance and service on Willys electrical systems should only be accomplished by qualified mechanics using the appropriate manuals. Voltage levels, particularly within the ignition system can be hazardous to other electrical components.In accordance with accepted automotive industry standards we do not offer refunds or exchanges on any electrical parts other than core exchanges on rebuildable generators, starters and distributors.

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