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LED front and rear light bulbs

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Does anybody have any idea how to install 1157 LED tail/turn signal/brake and parking/turn signal bulbs on a 1974 Chevy K10?  I've tried Sylvania and several other brands and they are not plug and play.  I understand how LEDs work in that the current will only travel one direction thru them.  Has anybody tried this and make it work?  If so,  please let me know what you did.


Thx a lot for any help.

Dan Brown

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