Trim switch bypassing trim limit switch?

[valkyr]

If you read my earlier post about the throttle replacement, you might have seen this, but I wanted to post it as a new issue:

Trim Button seems to raise engine/drive all the way up.

I left the Purple/White wire disconnected from the controller as no one seemed to be able to tell me what its for. Of course today I found it thanks to one of Don's posts. (i've really got to print out these manuals instead of sections :redface: )

http://www.boatfix.com/merc/Servmanl/11/11a5r5x.pdf

On page 5A-52 it lists the Purple/White as going to the trim limit switch. So, if I left this unconnected, the TRIM control will bypass the Trim Limit Switch? Is that a fair statement?

Since I left the Puple/White wire disconnected, where should I have hooked it up so that it would work. Attached is a wiring diagram of my controller to hook up the trim & tilt switch but I can't figure out where this purple wire would go? I assume it would wire in with the Blue (Trim Up) to the Trim Up button of the controller?

Edit #1:
Uploaded the wiring schematic of the trim. Now, notice how the trim wires have a Purple/White that comes from the Trim Limit Switch.(Attach #2). The Controller (Attach #1) doesnt have this wire. The TRIM buttons have GRN,BLUE, RED. The TILT button has GRN, WHT, PURPLE - It says purple from TILT goes to Power (which should be RED to power the button itself, correct?)

Thoughts?

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

No one replaced a throttle/shifter and had to rewire the trim / trailer switches?

 

[wil7483]

Re: Trim switch bypassing trim limit switch?

If you read my earlier post about the throttle replacement, you might have seen this, but I wanted to post it as a new issue:

Trim Button seems to raise engine/drive all the way up.

I left the Purple/White wire disconnected from the controller as no one seemed to be able to tell me what its for. Of course today I found it thanks to one of Don's posts. (i've really got to print out these manuals instead of sections :redface: )

http://www.boatfix.com/merc/Servmanl/11/11a5r5x.pdf

On page 5A-52 it lists the Purple/White as going to the trim limit switch. So, if I left this unconnected, the TRIM control will bypass the Trim Limit Switch? Is that a fair statement?

Since I left the Puple/White wire disconnected, where should I have hooked it up so that it would work. Attached is a wiring diagram of my controller to hook up the trim & tilt switch but I can't figure out where this purple wire would go? I assume it would wire in with the Blue (Trim Up) to the Trim Up button of the controller?

Edit #1:
Uploaded the wiring schematic of the trim. Now, notice how the trim wires have a Purple/White that comes from the Trim Limit Switch.(Attach #2). The Controller (Attach #1) doesnt have this wire. The TRIM buttons have GRN,BLUE, RED. The TILT button has GRN, WHT, PURPLE - It says purple from TILT goes to Power (which should be RED to power the button itself, correct?)

Thoughts?

YOU ANSWERED YOUR OWN QUESTION IT SEEMS. THE PURPLE/WHITE WIRE GOES TO THE CONNECTOR ON THE TRIM LIMIT SWITCH AS PER THE DIAGRAM. THE BLUE/WHITE WIRE GOES TO THE OTHER CONNECTOR.

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

YOU ANSWERED YOUR OWN QUESTION IT SEEMS. THE PURPLE/WHITE WIRE GOES TO THE CONNECTOR ON THE TRIM LIMIT SWITCH AS PER THE DIAGRAM. THE BLUE/WHITE WIRE GOES TO THE OTHER CONNECTOR.

My TILT button has 3 wires: Green, White, Purple.
Green = Tilt Down
White = Tilt Up
Purple = + Power

To get the Purple to hook to power, it has to hook to the RED power wire.

The boat has:
Blue = Trim Up
Green = Trim Down
Red = Power
Purple = Trim Limit

I don't think I want to connect both Purple Wires to the Red Power as that would trip/shoot a fuse wouldn't it? Thats about the only combination I havent tried. Does the TRIM limiter need a power (+12V) connection?

 

[Mischief Managed]

Re: Trim switch bypassing trim limit switch?

If you only have three wires coming out of one switch, you cannot have trim limit function. If you have an extra switch it should be used as a tilt switch and the trim switch should use the trim limit function. Assuming the trim limit switch is working, attach the trim up button wire (blue) to the purple/white wire. Attach the Tilt up button wire (green or white on your diagram) to the blue/white wire. You'll need +12V from the red/purple wire at both the trim up (red) and tilt up (violet) buttons as well.

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

If you only have three wires coming out of one switch, you cannot have trim limit function. If you have an extra switch it should be used as a tilt switch and the trim switch should use the trim limit function. Assuming the trim limit switch is working, attach the trim up button wire (blue) to the purple/white wire. Attach the Tilt up button wire (green or white on your diagram) to the blue/white wire. You'll need +12V from the red/purple wire at both the trim up (red) and tilt up (violet) buttons as well.

I swear I think I've tried that combination but I'll try it again and see what happens. I know the trim limit switch was working on the old controller, so no reason it shouldn't be working now.

Thanks!

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

OK...Just got a call back from Teleflex about this.

The tech guy says that the Green & White wires from the TILT switch should be connected together (which is what I did) and those should be connected to the VIOLET Wire in the boat that goes to the TRIM limit switch. (I had connected the GREEN & WHITE also to the BLUE (trim up) since the diagram had it going to the UP function.

So I'll try that first and if that doesn't work, I'll try MM's suggestion.

Maybe this will help someone else in the future

 

[Mischief Managed]

Re: Trim switch bypassing trim limit switch?

Connecting the green and white together just means that either tilt button will make the drive go up.

You gotta be more specific about wire colors. In the trim system, there is no violet wire in the boat harness. It should be purple with a white stripe (purple/white). There's also no blue wire, it should be blue/white. This is key because the switches have violet and blue wires on them.

I also disagree that the tilt switch should ever be connected to the purple/white wire. Tilt should have no limit and therefore should be able to bypass the trim limit switch and connect directly to the "up solenoid" via a blue/white wire.

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

Ok, sorry about the specifics, you are right.

Ok, so let me get this straight.

If the Purple/White (trim limit switch) is connected, THEN it limits the upward movement? I thought maybe the limit switch was always "ON" limiting the upward movement and the purple/white wire might override the limit switch and turn the limiter "OFF".

If you are right, then your connection would be correct.

The tech said:

For TRIM Switch:
"Connect the Blue Wire to the Blue/White wire.
Connect the Green Wire to the Green/White wire
Connect the Red Wire to the Red power wire.

For TILT switch:
Connect White & Green together and connect to Puple/White wire.
Connect Violet wire to Red power wire.

And you think it should be:
TRIM Switch:
Blue Wire to Purple/White wire
Green Wire to Green Wire
Red Wire to red power wire

Tilt Switch:
Green & White together to Blue Wire
Violet to Red power wire

(And yes I know connecting them together forces both buttons to function as up).

 

[Mischief Managed]

Re: Trim switch bypassing trim limit switch?

And you think it should be:
TRIM Switch:
Blue Wire to Purple/White wire
Green Wire to Green Wire
Red Wire to red power wire

Tilt Switch:
Green & White together to Blue Wire
Violet to Red power wire

Almost correct. Green and white together should go to the blue/white wire and the power wire is red/purple, not just red.

The trim limit switch simply opnes when the drive gets to a certain point. If you look at the schematic, you'll see a pair of blue/white wires connected to the trim limit switch. One goes directly to the UP solenoid. In order for the up solenoid to work, electricity must flow down that wire. Now, where can this electricity come from? It can come from the trim limit switch or the other blue/white wire. In order to come from the trim limit switch it has to get to the trim limit switch first. How can it get there? It has to be via the purple/white wire, nothing else makes sense. So, for the trim limit switch to do anything: the blue/white wire can only be fed electricity through the purple/white wire, through the trim limit switch and out the blue/white wire.

Now, let's say you wished to bypass the trim limit switch and tilt the drive past the limit. How would you do so? You'd pass electricity straight down blue/white wire to the UP solenoid, right? To do so, you'd just pass it down the other blue/white wire and it would make a U turn at the trim limit switch where it's connected directly to the blue/white wire that connects directly to the UP solenoid.

I could be wrong here, but I don't think I am.

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

Hmmm...

So:
Any signal/voltage coming into the limit switch via the BLU/WHT wire bypasses the limit switch function.
&
Any signal/voltage coming into the limit switch via the PUR/WHT wire causes the limit switch to apply the limit.

Man, I hope thats right as I'm tired of tearing into the wiring on this throttle

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

Found this on mercury's site (Its for Outboards but looks like it might apply to sterndrives as well)

Lt. Blue/White Stripe Trim UP Switch
Lt. Green/White Stripe Trim DOWN Switch
Brown/White Stripe Trim Sender to Trim Gauge
Purple/White Stripe Trim "Trailer" Switch

So if thats the case I need to connect the Purple/White to the trailer switch like the tech guy said....

Got a 50-50 choice here ... I usuallly choose incorrectly the first time (trivia, coin tosses etc)....So I was leaning toward MM's directions so I'm going to go against my judgement and try hooking it to the Green & White trailer switch first instead of the Blue trim up switch.

Lets see if my 50-50 luck holds out. It probably will! LOL

 

[Mischief Managed]

Re: Trim switch bypassing trim limit switch?

now you got me second guessing...

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

DANG IT!

Of course my first choice was wrong AGAIN. MM was right and the tech was wrong.

Again, my 50-50 luck holds true LOL

 

[Mischief Managed]

Re: Trim switch bypassing trim limit switch?

DANG IT!

Of course my first choice was wrong AGAIN. MM was right and the tech was wrong.

Again, my 50-50 luck holds true LOL

Well, if it's any consolation, I'm pleased...

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

Yeah, yeah...rub it in LOL

 

[Jerico]

Re: Trim switch bypassing trim limit switch?

Ya know the good thing about someone who asks a question is usually there is someone else with the same problem. When I bought my boat the solenoids were shot and the doofus had direct wired a toggle switch to the trim motor. When I started working on it a couple of days ago I found the same issue. 3 wires from the control, 4 in the harnass, no trailer switch, and the trim gague doesn't work.

Did you get yours completely figured out, and can you post how you finally wired it?

Thanks

 

[valkyr]

Re: Trim switch bypassing trim limit switch?

Does your harness have the following:

Red w/ white stripe
Blue w/ white stripe
Green w/ white stripe
Purple w/ white stripe ?

Red/wht = power +12v
Blue/white = Trim up bypassing trim limiter
Green/white = Trim down
Purple/white = Trim up until reaching trim limiter

What color wires does the controller have?

? = Power
?a = Trim Up
?b = Trim down

You probably want to connect your trim up to the Purple/White to keep from raising your drive up too far when you're cruising on the water. If you raise your drive too high when running at speed on the lake you can damage alot of things.

 

[scuppari]

Re: Trim switch bypassing trim limit switch?

my intention was not to hijack another post. i've deleted my original post so i don't offend.

 

[Don S]

Re: Trim switch bypassing trim limit switch?

Start a new thread with your problem. Don't hijack someone elses thread.
Few people read and reply to more than only the original post anyway. So after my post here, only a few will even see your question.