AMMETER 25/50 AMPERES
WOA8186
Ammeter 25/50 Ampere
For 6V and 12V electrical systems
High-quality reproduction ammeter with dual scale (-25/+25 and -50/+50 ampere) for various WWII military vehicles. This gauge measures the charging and discharging current of the electrical system and works on both 6 volt and 12 volt installations.
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Type Ammeter with internal shunt |
Scale Dual: -25/+25 and -50/+50 ampere |
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Voltage 6V and 12V systems |
Mounting 52mm (2 inch) dashboard opening |
Features
- Suitable for 6V and 12V electrical systems
- Black dial with white needle
- Complete with mounting hardware and connections
- Reproduction to original specifications
- Dual scale for flexible application
★ Quality reproduction that fits standard 52mm dashboard opening. Works with both original generator and modern alternator systems when properly installed.
Application
According to the product category, this ammeter is suitable for: Willys MB and Ford GPW (1941-1945), CJ-2A (1946-1949), CJ-3A (1949-1953), CJ-3B (1953-1964), M38 (1950-1952, 12V) and M38A1 (1952-1966, 12V). Also applicable to GMC CCKW and Dodge WC-series 6x6 trucks that used a comparable 50-ampere gauge.
Installation notes
The ammeter is wired in series in the charging circuit. The battery cable from the starter switch goes to one pole of the gauge; generator/alternator, ignition switch and light switch connect to the other pole (starter cables do NOT run through the ammeter). With correct installation, the needle shows +25 to +50 ampere immediately after starting (charging), returns to zero when battery is full, and points left (-) when discharging (lights on, engine off). Use minimum 8-10 AWG wiring.
Compatibility
NOTE: Early WWII Willys MB/GPW (up to S.N. ~240,000, June 1943) used a -30/+30 ampere gauge with the GEG-5001 generator with oil cups. Later vehicles with GEG-5002 generator (sealed bearings) received the -50/+50 ampere version. During 12V conversions, the ammeter remains usable provided the voltage regulator system has an internal shunt (as on M38/M38A1). With solid-state regulators without shunt: convert to voltmeter.
Historical context
The ammeter was standard dashboard instrumentation on all WWII jeeps and light military vehicles to monitor the condition of the 6V electrical system. Later military jeeps (M38-series) received 12V with 60-ampere gauges, whilst civilian CJ models continued to operate with 50-ampere versions well into the 1960s.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
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This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
ALL_CATEGORIES : ELECTRIC BODY MB, 09 DASHBOARD MB/GPW, DASHBOARD CJ2A, ELECTRIC BODY CJ2A, DASHBOARD CJ3A, ELECTRIC BODY CJ3A, DASHBOARD M38, PARTS DASHBOARD CJ2A, ELECTRIC BODY CJ3B
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Ford GPW | 1942, 1943, 1944, 1945 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |
| CJ series | |
| Jeep CJ-2A | 1945, 1946, 1947, 1948, 1949 |
| Jeep CJ-3A | 1949, 1950, 1951, 1952, 1953 |
📐 Diagrams & technical drawings
From the original Technical Manual CJ2A_PL_1949 — Parts List — only for Willys CJ-2A / CJ-3A (1949)
From the original Technical Manual TM 10-1513 — Maintenance Manual — only for Willys MB / Ford GPW (1942)
From the original Technical Manual TM 9-1803B — Ordnance Maintenance — Power Train, Body & Frame — only for Willys MB / Ford GPW (¼-ton 4×4)
