[ndutton]

I'll add that I provided the wiring drawing because the drawing Doug was trying to follow was not clear in the small details of which specific post each wire connected to plus his drawing included an ammeter (which he does not have) that was screwing everything up. Further, the flushing valve/Tee picture was because he is considering staying with raw water cooling due to space constraints for FWC (hint hint: there may be a complete FWC system available depending on what he decides . . . HX successfully pressure tested). The flush valve allows him to thoroughly flush his engine as part of boat clean-up in lieu of FWC. The downside is he won't reach the preferred higher engine operating temperature.