Sherman schematics

there seems to some question and confusion, about 12 volt VS. 24 volt radios in shermans. perhaps a gallery of schematics will help answer the question.

Gallery

1942

1944

from the volume 8 SNL

1953

at some point the color coded system was dropped and a number system, was instituted, along with this change, the brake lights were deleted. (at least on the A3 shermans). unfortunately the 1954 manual does not include a wire schedule. and I don't believe anyone has ever found a universal schedule to explain all the numbers.

armor harness

most armored vehicles used woven brass flex conduit with a "garden hose" fitting soldered on the end. the electrical connection was usually a bakelight connector with very small set screws for the wire. and a slide fitting over the set screw section.

References

• TM 9-759 1943, 1944, 1953
• TM TM 11-2748, 45. Installation of Radio and Interphone Equipment in Medium Tank M4A3 or M4A3E2, 75-mm Gun, Wet Stowage; Medium Tank M4A1, M4A2, and M4A3, 105-mm Howitzer, 40 pages. PB 80907 - BSIR 7(1):34; 10/03/47