I have looked on you tube to find out how to hook up a resister to single led bulbs ,mostly 3&5mm drawing 20 to 25 ma,one video showed the resister going on the negative side ,i thought it was suppose to go on the positive side ,which one does it go on ? secound question is does it matter which end of the resister goes to the led bulb ?
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a) Either
b) no
CJ Meyers posted:a) Either
b) no
As CJ says, the Chinese signals we've gotten have come both ways.
(Of course when you flop the DC +/- inadvertently... 
Don't ask:-)
I have ordered 20 pre wired 3mm led's for $13.00 for a small project ,in doing more research i found i could have bought 100 led's with 100 resisters { i would have to connect the resisters myself } ,for about $7.00 & free shipping from here in the states ,if i would have seen this sooner i would have ordered them instead of the 20 that i did order ,now that i know how the resisters get hooked up i would order the one's that i would have to connect myself , 100 led's would last me many years for the amount of projects i do ,i still may order them just for the fun i have doing things that for most people would make no sense ,but i am having a lot of fun doing them,& as has been said on this forum in the past "IT'S YOUR RAILROAD DO WHAT EVER YOU WANT",& thats how i enjoy this hobby. Thanks for you help.
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