I don’t think you have to modify anything other than the wiring if you have the bumper and the trunk ?There is no tutorial but its been discussed on this forum.
You need new bumper, body bumper retainer s, tail lights and slightly modify trunk light opening. Then get yourself wiring diagrams from VW erWin Online | Volkswagen of America | erWin Online
To cross-reference wiring from two cars. I believe there is slight modification needed to the wiring. VCDS is probably required as well to code for led lights
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What you see in the pic has already been done; they're before and after. The trunk is the same externally but the housing for the inner taillights is different. Right now, I'm looking for the diagram for wiring the second gen taillights to work with the first gen or any insight mI don’t think you have to modify anything other than the wiring if you have the bumper and the trunk ?
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