exlandieman Posted January 29, 2013 Share Posted January 29, 2013 (edited) My WDCO is 1942....the manual i have is 1949 which shows neg earth. My question is ; should my bike be pos or neg earth? The reason i ask is that the loom i have mentions pos earth. Tbh i know it doesn't make much odds, except for authenticity, i can flash genny for either but if i put a solid state reg in then i need to know which one + or - to go for. Chris Edited January 29, 2013 by exlandieman Quote Link to comment Share on other sites More sharing options...
Roof Over Britain Posted January 29, 2013 Share Posted January 29, 2013 The manual I have is '42 dated and shows -ve earth. I think most military vehicles were -ve earth even back then. Quote Link to comment Share on other sites More sharing options...
exlandieman Posted January 29, 2013 Author Share Posted January 29, 2013 ok...thanks for that...odd that the wire list with the loom says it's for pos earth.....as was my `57 landie Quote Link to comment Share on other sites More sharing options...
wdbikemad Posted January 29, 2013 Share Posted January 29, 2013 Negative earth for all wartime British bikes......... Quote Link to comment Share on other sites More sharing options...
Tony B Posted January 29, 2013 Share Posted January 29, 2013 If the original wiring is still in place. Which way is the coil wired? That's the clincher as far as I know. Quote Link to comment Share on other sites More sharing options...
exlandieman Posted January 29, 2013 Author Share Posted January 29, 2013 a) not original wiring b) doesnt have a coil !....magneto c) i'll wire it neg earth then thanks all Quote Link to comment Share on other sites More sharing options...
Ron Posted January 29, 2013 Share Posted January 29, 2013 Yes all Neg earth for that period. Manufacturers went over to poss earth for some time during the 50's and 60's (something to do with battery corrosion?) But they went back to neg earth again. Ron Quote Link to comment Share on other sites More sharing options...
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