How do I match the new turn signal socket wires?

How do I match the new turn signal socket wires to the truck? It's a 2003 GMC Sierra.

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crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 1
crwdns2934285:0crwdne2934285:0