Tilt connection to throttle.

[benl]

I have recently restored an old sportscraft boat with a 75 model 55 Johnson. There is a electric tilt motor that I need to re-connect to the throttle controls. The tilt control on the throttle has three fine wires red, blue and green. The tilt motor has three larger wires being black, purple and green with a finer black wire also. As an electrics novice I am hopeful that someone may be able to assist with re-connecting the wires back up in the correct series. Thanks in advance.

 

[OBJ]

Re: Tilt connection to throttle.

Welcome to iboats benl....<br /><br />Can you describe the unit? Is there a "wing" connected to the motors swivel bracket or is there a single cylinder mounted on the starboard side of the engines transom mount. Makes a difference. The "wing" indicates a Trim & Tilt unit. The single cylinder indicates just a tilt unit.<br /><br />Apparently you are missing the relay or solenoid box for the unit. The three wires in control box just apply 12V to solenoids that in turn apply 12V via the heavier wires coming from the Tilt unit. <br /><br />If you could get a service manual, OEM or generic, it would have the wiring diagrams for the units. Generics are sold here on iboats. See the bottom of the page.

 

[benl]

Re: Tilt connection to throttle.

I believe it is a tilt unit only OBJ. There are two hydraulic arms on either side of the outboard. On the S/B side of the outboard (on the outside of the s/b arm) there is a mounted unit. This is possibly the solenoid? This unit has the three large wires and one smaller wire coming from the top of the unit. They are wrapped in a large rubber sleeve and go through a hole with the steering cable back into the boat.

 

[OBJ]

Re: Tilt connection to throttle.

Would there be a connector on the end of the wires ben? These early tilt unit wires went straight to the dash board and worked off a heavy duty toggle switch....something that would carry the amps needed to raise and lower the motor....raise mainly. The blue wire is the "UP" wire and the green is the "DOWN" wire. Black of course is ground. On the toggle switch, center post would be the "HOT". You could rig it like this but take care to chose a toggle that would carry the load and spring loaded to return to neutral position. And of course, fuse the hot wire. Wiring should be of marine grade and sized for the distance to the toggle. Remember, this unit only tilts the engine all the way up or down.

 

[benl]

Re: Tilt connection to throttle.

OBJ that's made things a lot clearer for me to understand already, I confirm there is a thumb switch to control tilt forup-down on the trottle itself. This switch has three fine wires running to the rear of the boat. I am tring to identify what the series of connections might look like? What connects to what? Let me know if the information I am looking for is too difficult to explain...I appreciate your help in any case.

 

[OBJ]

Re: Tilt connection to throttle.

Your control is from a much later model that used relays to control the voltage to the TNT motor. I would not use the switch on the control handle. The wires are much too light. <br /><br />Basically speaking, You have an ON-OFF-ON switch on the dash. The hot wire (red) goes to the center post of the switch. The green wire from the tilt motor goes to the upper post on the switch and the blue to the lower. The black from the motor goes to battery ground. Push the switch up, the motor raises. Push the switch down, the motor lowers.<br /><br />I'll see if I can dig up a wiring diagram for you if you want. I'll just need your addy so I know where to send it.

 

[benl]

Re: Tilt connection to throttle.

Thanks for your time OBJ. benl@centralstar.com.au.

 

[OBJ]

Re: Tilt connection to throttle.

OK benl...we'll see what we can do...

 

[benl]

Re: Tilt connection to throttle.

Well I guess I was expecting to find a blkue red and green wire running from the TNT motor to connect to the switch. I guess it's not that easy is it. The TNT motor infact has three heavy wires Black, Red and Blue. My switch has three wires as you suggested being Blue (up), Red (live) and Green (down). I can't work out how each of the wires are connected (ie to the battery and to each other). I will wait too see if you are able to dig up a wiring diagram in the meantime.

 

[OBJ]

Re: Tilt connection to throttle.

Ben...it's a DC motor that rotates both ways. Voltage through the blue wire and it goes up. Reverse the motor rotation via the green wire and the motor goes down. I'll get ya' something out shortly.

 

[benl]

Re: Tilt connection to throttle.

Sure, I understood that from your last post. Thanks. But I dont have those colors from the motor. Those colors are from the switch instead. I have black, red and blue from the TNT motor. I can't see how the battery is connected to the TNT motor and then connected to the switch. I will be patient and wait..

 

[OBJ]

Re: Tilt connection to throttle.

The battery is connected through the switch. The switch, switches power from wire to wire on the motor. The battery does not connect directly to the Tilt motor except for the black ground lead.

 

[benl]

Re: Tilt connection to throttle.

I have taken the information you have given me and the great news is the motor does work and all that remains is to check the series of wires for the switch to operate correctly. I am on to that later today. <br />I want to say thanks for all your help thus far OBJ. I was showing my best friends Dad (a boating enthusiast and fellow tinkerer) a copy of our string and he was just astonished at the depth of knowledge in your advice in both my posts. What was equally amazing was that you took the interest in helping me when I am here on the other side of the world in Australia scratching my head and really have no real way of thanking you other than with my appreciation. Thanks.

 

[benl]

Re: Tilt connection to throttle.

I think I have the wiring right now. I also think that the reason I am not getting a response from the on-off-on switch is because I don't have a solenoid (there wasn't one there to start with?)and the amps are running to low from the switch back to the motor.

 

[OBJ]

Re: Tilt connection to throttle.

If I could come up with a hand drawing showing a dual solenoid set up, would that help? You could even use the switch on the controls with this type set up.<br /><br />As far as helping is concerned....that's what these forums is all about. If it wasn't me helping, someone else would. We all have one thing in common....BOATS!!

 

[OBJ]

Re: Tilt connection to throttle.

OK Ben....glad you got it. Keeps us upto date on what your doing and if your having any trouble, don't hesitate to post. Stay in touch.<br /><br />Jim

 

[benl]

Re: Tilt connection to throttle.

I got it working last night OBJ. The wiring was as per your instructions, but I guess early on I didn't understand what you were trying to tell me. The more I thought about it the more I understood, it took a few days though. Thanks OBJ.