Frank wrote: I have seen a LOT of 45 Willys MB`s with the short type horn. This have been debated earlyer, but no one have found any proof. Do you have any pictures ore manuals that show`s the long WWII type horn used on the CJ`s? Please e-mail me ore post here if you have any info. Best Regards, Frank..
No, but here's the opposite: a wiring diagram from the 1945 First Edition CJ-2A Parts List that shows a short trumpet horn on the 1946 CJ-2A:
Note that this short trumpet horn is directly connected to late war WO military part number A-17715 by their common key number 28. This short trumpet late WW II MB horn A-17715 was discussed in this earlier thread:
http://www.g503.com/forums/viewtopic.ph ... umpet+horn
I think the above drawing showing A-17715 as a short trumpet horn is conclusive because the drawing is contemporary to the year the horn was first used, 1945, is in an official document from the company that installed the horn on their military and civilian vehicles, Willys-Overland, and is depicted in a new drawing for the CJ-2A wiring diagram as opposed to being in a recycled drawing of a MB wiring diagram that was merely adopted for use in the CJ-2A parts list, definitely not the case here.
By contrast, note the distinct long trumpet on MB horn A-1312, key number 25, in this 1943 MB wiring diagram from page 0600-23 in WO Maintenance Manual TM-10-1513 Change No. 1 dated May 1, 1943:
To me, the visual difference between the very late war short trumpet horn A-17715 and the early-to-late war long trumpet horn A-1312 is proof positive that military horn A-17715 had a short trumpet. The fact that A-17715 was released for production and use on the MB on July 9, 1945, as discussed in the above other thread, establishes to my personal satisfaction that very late war MB jeeps built during the last 7 weeks or so of production had the short trumpet A-17715 horn installed at the WO factory, consistent with your personal observation of many 1945 jeeps.