harness swap question
 

im about to do a TII swap and from what research ive gathered on here (and elsewhere) everyone says that you need to swap your NA harness to a TII harness. i never questioned it until i read a thread on here earlier about someone using their NA harness in the swap and it working fine. my question is that why would you need to swap if the na harness works? if any one can elaborate or point me in a direction it would be appreciated. oh and btw i did try searching on here.

please delete. found my info in the archive. :wallbash: im an idiot sometimes.