I have PTO on my transmission with forward and reverse so no.
But I have been around them on the transfer case.
With them you put your t-case in neutral and select the speeds from the transmission, 4th for direct, 1st for super slow and reverse for power out.
I will be putting one on the 205 of another project I have, it's a 1941 Dodge WC26 Carryall with a MU2 PTO winch on it.
