I have a hampton bay ceiling fan the four wirepull switch for the fan broke I bought a new switch took apart old one don't remember which wire goes were I have black ,blue yellow,white wire and on the switch it has a L,1,2,3

Might be

L - White, 1- Black, 2 - Blue, 3 - Yellow

Read this:

Ceiling fan pull chain replacement and repair - Ceiling Fans N More (http://www.ceiling-fans-n-more.com/ceiling-fan-pullchain-replacement-and-repair.php)