New here with some questions

Hi guys:
I bought my first buick two weeks ago and I am very happy.
And I want to make some improvement but I nned some help.
can I change the mirror for the one have compass.
requiere extra wiring or just plug in the new one.
Can I install courtesy light in the door as the same way.
thank in advance for any answer.
Andre.

Welcome to AF, back up and post the year.

Oh sorry
Is a Lesaber 2003 custom 3.8
Andre.

I have the same car, great ride. Both require the harness. Might get everything at a salvage yard if you can talk them into taking down the headliner and doing it right.