I just glanced back over this thread, and that last part made me laugh. What do you suppose that yellow tag does for you, anyway? What does it mean? Does one need to be a repair station to "issue" a yellow tag? Does it have any meaning, or carry any weight? Does it play any role at all in determining that a part is airworthy? If you guessed the answer to these questions is a big, resounding NO!, then you'd be right...it's meaningless, does nothing for you, carries no weight, and doesn't stand for a darn thing, nor signify that you did the work correctly.As for the plastic piece in the DME the avionics shop will give the unit a really good look over / tuneup on the bench and check my work they will issue a yellow tag upon verification that the work I did was proper.
Wanna try again, Mr. Mechanic?
The yellow tag is an inventory tool to mark a part when removed as a reminder that it's airworthy. Putting a yellow tag on an item doesn't make it airworthy, and your part as removed isn't...so it's a green tag item...repairable, then. Even at that, the green tag is nothing more than a color coding way of tracking parts on the shelf...nothing more.