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Old 03-04-2021, 02:28 PM   #1
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Default trim/sender wire test

The SR23 that I bought had a trim gauge installed when i went to see the boat at the dealer When I picked it up the gauge was removed and the dealer said it did not work so they removed the gauge. and installed a blank cover. Under the helm there is a harness for the trim gauge to connect. How would I test with a multi meter the 3 wire in the harness to see if the wires or good or maybe it was the gauge was no good and they did not want to replace that.

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Mark
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Old 03-04-2021, 03:27 PM   #2
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They are not always that accurate or as useful as you would like them to be.

Start by counting the number of 'clicks' of the trim out to go from all the way IN, to all the way OUT. On my Bravo III, if I recall it was about 6 clicks. Remember we're talking about the clicks to the Trim Limit, not all the way out with the trailer button.

Once you're on plane, trim out (counting each click) until you hear the prop start to cavitate, then click in (again counting each click) until it stops (Learn to keep track of the number in your head.) That is your ideal trim angle. If it gets rough and you hear the occasional cavitation going down a wave, then click in again until that stops.

That process will be way more accurate than a trim guage.
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Old 03-04-2021, 03:35 PM   #3
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I appreciate your reply but I still would like to have a working gauge on my helm and not a round peice of carboard.

Thanks

Mark Any idea how to check the wires.

Thanks

Quote:
Originally Posted by shrew View Post
They are not always that accurate or as useful as you would like them to be.

Start by counting the number of 'clicks' of the trim out to go from all the way IN, to all the way OUT. On my Bravo III, if I recall it was about 6 clicks. Remember we're talking about the clicks to the Trim Limit, not all the way out with the trailer button.

Once you're on plane, trim out (counting each click) until you hear the prop start to cavitate, then click in (again counting each click) until it stops (Learn to keep track of the number in your head.) That is your ideal trim angle. If it gets rough and you hear the occasional cavitation going down a wave, then click in again until that stops.

That process will be way more accurate than a trim guage.
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Old 03-04-2021, 03:55 PM   #4
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The three wires should be purple, black and brown/white. The last being the sense from the position sender. Using an ohnmeter connect it between the black and brown/white wires, raise and lower the drive and you should see the resistance change.
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Old 03-04-2021, 05:42 PM   #5
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Quote:
Originally Posted by mmwjr View Post
The three wires should be purple, black and brown/white. The last being the sense from the position sender. Using an ohnmeter connect it between the black and brown/white wires, raise and lower the drive and you should see the resistance change.
THANKS SO MUCH that's what I needed to know
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