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Author Topic:   Installing Trim Guage
timsr posted 02-27-2005 01:59 PM ET (US)   Profile for timsr   Send Email to timsr  
I am planning on installinga trim guage on my new Montauk. Is this better left for a dealer to do or is it a fairly easy task.


skred posted 02-28-2005 08:24 AM ET (US)     Profile for skred  Send Email to skred     
Having installed Tach, Speed, Trim, and Clock on a Whaler I previously, owned, I'd say if you have the cash - let the dealer do it.
bsmotril posted 02-28-2005 10:33 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
This is a very easy do it yourself task. The wiring is already in the wire harness to the motor. The dealer where you buy the gauge can tell you which color wire it is. You have a ground wire, the send wire from the trim sensor, and 12 Volts for the light, that's it. The hardest part is cutting the hole with a hole saw in the dash. Most Merc motors already come with the sending unit installed on the motor. If not, that is also very easy to add yourself because the wiring is already there. Two screws hold it on, then plug in the wire to the sender.
Phil Tyson posted 02-28-2005 07:49 PM ET (US)     Profile for Phil Tyson  Send Email to Phil Tyson     
I replaced a defective gauge that came with my (new to me) 1987 Montauk.

The parts counter staff explained the wiring and drew me a diagram noting colors.

To mount the gauge in an area that is fiberglass, check behind the intended location to ensure nothing is in your way.

Purchase the correct diameter hole saw (for your drill)with the drill bit in the center. (check the gauge instructions for the correct diameter of the hole.) You can find this at any hardware store.

Mark center of the hole with marker.

Mask the area of the edge with masking tape (go 1/2 inch inside and out side of hole)

Go slow and make sure you drill straight (straight according to console).

Once 1/2 way through, drill the rest from the inside of the console OUT. This allows a clean hole on both sides.

Wire and test. If not working, check wiring.

davej14 posted 02-28-2005 09:07 PM ET (US)     Profile for davej14  Send Email to davej14     
I installed the sender on a 75 merc 2-stroke last fall. It was very easy ans complete instructions came with the part. I ordered the gauge but it is a Spring project. Again, the instructions are very complete and you should be able to do the install on your own.

FYI, I went to the local Bass Pro Store for the original Merc parts. There are a few "series" to choose from and they had a catalog which helped make certain I was getting the right part.

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