Has anyone added a tilt trim gauage to a 90's model Merc?

[CharlestonSC]

My 89 sport 20 has a 94 200hp black max offshore Merc, everthing I have found said I need a sending unit. can't seem to locate one online, but ebay has OMC sending unit which I thought I could just mount it to the motor bracket as long as the lever moves with the bracket that tilts the motor.
any suggestions?

[spareparts]

check this site
http://www.butlermarineinc.com/fiche_select.asp
they have microfish on line, use your serial number to identify the correct engine(watch it that soem 20 hp motors were caleld 200 years agao, you need to find the V-200), let me know what part number you need or try and find one on ebay

[captpete13]

that motor should have a sending unit on it. It's mounted on the pin that holds the top end of the tilt cylinder in place. It has a brown and white wire comming from it routed into the cowl. it should be laying there by the main engine harness.

[CharlestonSC]

Cool I do have one single brown wire running to that point, so that must be it.
Do you know will I need any special trim gauage or will any I find work?

[captpete13]

Cool I do have one single brown wire running to that point, so that must be it.
Do you know will I need any special trim gauage or will any I find work?
is it a brown/white wire or a tan(temp sensor) wire? Did you see the sender? It's small like a little hockey puck. Any trim gauge should work with it. I think I have a merc trim gauge laying around. if I can find it its yours if you want it.

[spareparts]

I probably got one laying around somewhere if Pete can't find his

[CharlestonSC]

thanks I'll check it out. I am redoing my dash and I want to add a trim gauge and temp gauge, from what I have read I can just tap off the wire going to the temp horn in the dash, do you know?

[spareparts]

takes a different sender for temp, the alarm is an on/off type sender(actually a switch), where as a temp gauge sender is a variable resistance sender to actuate the gauge. I personally don't worry about a temp gauge, I'd use a tach, fual gauge, volt gauge and a water pressure gauge if it were mine(thats what I intend to put in my boat), make sure your temp alarm is working

[captpete13]

on your motor one of the temp switches also is a sender. I think it is in the port head. Check the cylinder heads. between the spark plugs there will be a sensor with wires comming out of it. there is one on each head. The one with one wire(tan/blue) is the overheat switch. The sensor with a few wires(tan,tan/blue,black)is the temp sender. There should be a connector for it by your main engine harness.

[CharlestonSC]

Ok this is what I see, on the left side looking at the back of the engine is a solid tan wire that hooks to the harnes plug that goes to the gauges. right side is the tan with blue stripe that goes to a terminal block then goes in to the wraped motor wires looks like it changes into a blue with black stripe
So is it the solid tan wire that is the sending temp wire?
You guys are awsom thats for all the input.

[CharlestonSC]

Did a bit more research
On the back of my dash there are several wires not hooked up.
I see a brown with white stripe, which must be the tilt sender.
There is a tan then a tan/w blue
The tan/w blue is tied in to the temp horn,

Also a few others I wondering about
A black/w yellow coming off the ignition switch it has a plug in snap plug end.
Then there is a purple jumper wire zip tied near the plug that goes to the tilt trim in the throttle.

[captpete13]

you are right about what you found under the dash. The black and yellow wire would be the kill circuit for the safety lanyard. Not sure about the purple jumper. Purple is key switched power. What controller is it?

[CharlestonSC]

not sure what the control is, I'll have to check the little sticker on it.
so do would you say the plane tan wire is the sender for the temp?
and why did they tap in the temp horn to the tanw/white then ran it to the back of the tac with the plane tan wire, will I use both?

[captpete13]

the tan wire is temp. Not sure what all that is with your horn.

[CharlestonSC]

The controler is a Morse it could be 1989 that came with the boat or 1994 what the motor is. It has tilt trim in the handle.
Thanks for all your help

[captpete13]

I found that trim guage. Its not a merc guage. I think its teleflex. It has a black face with white lettering. If you want it I will bring it down to Charleston with me on Thursday.

[CharlestonSC]

I'm found one here, thanks for all your help, have a safe trip.