Hi JMM,
Yes - you need to look at the wiring diagram shown on Clarks website and in particular, the 8 pin connector. turret rotation is pins 1 & 2 for Clark I think but in my HL's it was 7 & 8 so you have to move the pins. You cant just plug the connector in the other way round as it is foolproofed.check the other connections too as these will probably have to move as well. & don't forget to do the wire mod. which Imex Erik did a video of - all on Clarks website - just view it and look carefully for the information.

Good luck

cheers

CaptB