Horse Riding System, 3rd person character swap

Hello guys, i need help changing the mannequin that comes by default on the horse riding system, i was able to change the skin through a different BP and my own character, but when i try to mount the horse it doesn´t work. I assume its all wired to the mannequin BP, but i do not know which nodes to associate with my character.
BTW i have all animations done for my character, i just need to wire them to the correct nodes.
Does anybody knows how to fix this issue?