HIGHCOUNTRY54

Hi Phil, I think all i need is your diy kit. I have 15 Silverado 2500hd duramax high country.I replaced the DL3 mirrors with A1 Auto 1798 mirrors. Everything that worked before works now but of course the marker and spot lights don’t. I checked the body side of the door harness and it has pins 11and 9 that I checked with test light to confirm. Thanks for your help.