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Friday, May 20, 2011

Wiring, Wiring, Wiring

The last two days I've finished up the wiring, installed and aligned the fin position sensors, installed and aligned the prop shaft speed sensors, installed the reverse interlock relays, and dressed up the rats nest of cables. At this point, everything is done except the oil cooler, filter, and associated hoses. These are held up waiting for a pipe fitting for my raw water system.

The first pictures are before and after of the wiring. Split loom is great stuff.

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The next two show the prop shaft speed sensor. There are two reflectors that get tie-wrapped to the shaft along with a neoprene sheet to block reflection in betweeen. The little yellow thing is the sensor. It shoots a beam at the reflector and looks for the light to shine back, allowing it to count shaft revolutions. This part of the system, as my kids would say, is pretty bootleg. Getting the reflectors, backing sheets, and tie wraps on, aligned, and tight is very awkward. The sensors are exposed too, even though I've got them tucked away as best I can. It would be so much simpler to have a NMEA input (preferably N2K) where the controller could pickup the SOG from the GPS. Oh well, the good news is that I could have much bigger things to complain about, but I don't.
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The next picture shows the reverse sensor relay box (to the right of the copper colored power converter). This wires into the Glendinning shift controller via break-out cables and can be wired to detect forward or reverse on either engine and close a relay. The relay closure tells the stabilizers if the boat is in reverse so it can center and lock the fins.
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Last shows the port side with cables dressed, and you can see the aluminum cap over the center of the actuator covering the fin position sensor.
 
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