Mercury Thunderbolt 80 hp tilt/trim problem

[pupps-power]

I am a new member so please forgive me if this questions sounds stupid.

I have three wires coming from my throttle body, a green. blue and red.

I recently replaced the green cable connector that leads to the solenoid on the engine.

Now my tilt does not go down. It goes up fine.

I changed the leads around in the mid way connector so when I opearte the down switch on the throttle body it goes up (so I assume its not a problem with the switch itself.)

I then took the blue connector (which works) from the solenoid and put it on the green solenoid assuming it would go down when switch pressed up but nothing.

It worked fine before I replaced the connector onto the solenoid.

Aso what does the red cable do?, It has a fuse connector by the solenoid, when this is taken out the tilt stills goes up.

Anyone any ideas? So frustrasted.!!!

 

[rosser1]

Re: Mercury Thunderbolt 80 hp tilt/trim problem

is it your power wire, which one(s) go to the battery?

 

[pupps-power]

Re: Mercury Thunderbolt 80 hp tilt/trim problem

I am not sure how it can be my power wire to the battery as I have tilt.

 

[Moody Blue]

Re: Mercury Thunderbolt 80 hp tilt/trim problem

Some of your terminology is a little confusing so not clear on what you are describing.
"I recently replaced the green cable connector that leads to the solenoid on the engine."
No solenoid on the engine for the trim system.

"I changed the leads around in the mid way connector"
What is the midway connector?

The three wires to your trim control are

RED = POWER (+12V)
BLUE = TRIM UP
GREEN = TRIM DOWN

Red provides power to the trim switch panel. When you activate either UP or DOWN button, the +12V is switched to the respective button. The UP puts +12V on the BLUE wire back to the UP solenoid. The DOWN button puts +12V on the GREEN wire back to the DOWN solenoid.

If you pulled the fuse and the trim still works then something is not wired correctly. That fuse is to protect the trim pump motor. Fuse should be in-line between the battery and the RED (heavy) wire that connects to the trim solenoids. From the same point, there should also be a lighter RED wire that runs to the trim control panel.

Try this to determine if the problem is related to the solenoids or the wiring.
Take a short heavy gauge wire (10ga) and jumper across the two large terminals of each solenoid, one at a time. If the solenoids are good then the trim motor will run in the respective direction of the bypassed solenoid.

TO check the wiring, disconnect the BLUE and GREEN wires from the solenoids. Connect a voltmeter or test light between the BLUE wire and a GND. Press the UP trim switch and you should see +12V (or lamp lights). Try the same for the GREEN wire and press the DOWN button. Should see +12V (or lamp lights).