[E36GRIP]

Does anybody know of a "how to" for adding side markers?

 

[E36GRIP]

i am unfamiliar with the term "turn signal repeaters" but yeah the square lights that go on the fenders (i call them side markers) that seem to have come stock on some 3 series cars.

what I'm looking for is mainly a stencil or dimensions on the rectangle i need to cut out and measurements as to where i need to make said rectangle