I followed the instructions provided with the RF wire harness and think I did a pretty good job. Adding the Breeze Adjustable Thermostat Cooling Fan Switch and splicing in a toggle switch to turn the cooling fan on manually, may have complicated things. And, for me, following the schematic had been a challenge. For example, I am not quite clear on the relationship of the dk green-fan thermo switch wire, the dk blue -cooling fan wire, the thermo switch mounted in the intake manifold water port, the Breeze adjustable switch and the flow of these wires in and out of the fuse panel and the relay within the panel. I guess I'm asking what triggers what and what's the flow? And, how does the water temp guage tie into the system?