I realized the Yamaha rigging wiring harness was not correct for the C90. Also I needed to work a Water Pressure Gauge tubing & Running Lite wire thru the grommet. The OEM Tach & Gauges were all original, I'm replacing them with newer gauges.

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The Tach mounting hole is too small for a modern tach. I will need to open it up.

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Yamaha manufacturers their rigging wiring harnesses long to fit more applications. Here I fold the excess rigging outside over the gunnel until I'm fully complete on terminating both ends. At that point the balance of the excess can be folded neatly, secured with tie wraps, and tucked out of the way. Normally I secure to the steering cable but this one is a foot too long for long term use, it will be replaced or hydraulics installed soon.

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The rigging wiring is all tucked out of the way in this little boat, I'm folding like a pretzel to reach some of this stuff.

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Dirt Dauber nests are everywhere. I can fill a 5 gallon bucket with them. Well the bright side the boat is getting lighter.

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Pulling rigging back and forth I'm keeping 2 fish tapes working. Running lite circuit & water pressure tubing heading to the engine here.

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When working everything into the molded Lower Cowl Grommet you need patience. So many things need to line up with the exact spot Yamaha designed it to be once rigged. The clamp for the grommet is not just tightened down smashing everything in place, these older engine clamps will bend and break. I grab the entire bundle with my right hand twisting the bundle back and forth while pressing down on the clamp with the other hand. As items in the bundle snug together I can turn each bolt in the clamp by hand a little more. I keep doing this till the clamp is almost bottoming out on the lower cowl before tightening the bolts to secure it.

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The water pressure tubing is routed to where the fitting screws into the water cooling system in the engine.

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To accomplish a nice neat ambilocal connection like this takes time. I never rush this part, if the contents don't want to lay right for me I walk off to return later finishing the task. Seems walking off if needed always works when things just do want to work like I expect them to.