I recently bought some DL3(i think they have the turn signal and puddle light) mirrors and the drive side mirror harness was cut. Is there a way to get the two connectors and the wiring diagram to remake the harness. Also are they plug-n-play on my 2005 crew cab Silverado with just powe radjustable mirrors

 

You should be able to splice connectors back on

Yes, they are compatible with your truck. You won't be able to use powerfold functions until you buy a DL3 window switch, but otherwise, they will work

 

Would my existing mirror harness have what I need to make the new mirrors work? I'm not to concerned about the power fold feature

 

That I'm not sure. I'm thinking about colormatching my dl3 mirrors soon so I can let you know when I take them off. The mirrors I put on temporarily are just power like you have. I can compare the plugs and wiring at that time