Uniden grant xl echo board removal

I picked up this grant xl about six months ago and it works... and the echo board works as well. I just don’t like echo boards, and I don’t want it in my grant xl. I really do not want to buy another grant xl just to put this one back to factory. If any one can help me by looking at their grant xl and telling me where the wires go I would greatly appreciate it and I will even give you the echo board if you want it.

I know the brown and white wires go to the internal speaker, I do not know...

Uniden grant xl echo board removal