My H-36
I have the S-1 so you will not need to worry about rudder sensor but the fluxgat is in the middle rear compartment in the rear berth and the computer is in the outside bulkhead wall with access from the rear stern hatches,its right in the middle mounted on the bulkhead wall ,the wire enters into the console under the compass and comes down the port stainless pole down under the cockpit deck floor and into the the computer,a PVC pipe goes from the rear outside compartment into the circuit breaker panel for power cable.
Any other info just send a message or email.
Nick