Quick : 3 wire trim to 2 wire: blew the fuse in the wiring harness

pantaloonz

Petty Officer 1st Class
Joined
Nov 28, 2014
Messages
237
Hi all,

EDIT: Darn it!! This should be in Electrical, I apologize. if a Mod reads this feel free to move.. sorry.

MOD EDIT - Pantz - It should stay here for Force trim help. Force electrical vs boat electrical.

Summary question: When converting to a two wire relay system in a 3 wire setup; What happens to the original RED wire from the control switch?
1986 Bayliner Capri 1900 CG, 125 HP Force 1254X6B

Detailed question:

I'm trying to convert a 3 wire tilt trim to connect to the new 2 wire motor. I got the wiring harness with both relays, black and red lead going to the battery, two smaller gauge blue and green wires going to the control switch, and two larger gauge green and blue wires going to the pump.

In the original wiring (3 wire) there was a blue, green and RED wire in the same shielding coming from the helm, it connected to a three wire cable coming from the pump with the blue and green and BLACK wires coming from the pump.

What I think I did wrong, and looking for guidance here, I connected the original RED wire directly to the battery, and the green and blue into the relays, and then connected the outbound green and blues to the pump.... when I engaged the control switch I could hear a click, but no pumping occurred. on the third try the fuse in the wiring harness blew (which is probably a good thing)

I'm not an electrician obviously, but should the RED wire from the control switch be necessary when using relays? The harness should be drawing current from the battery when the control box is engaged from either the blue or green? Wouldn't connecting the RED cause too much current to flow (hence blowing the fuse)?

Help?

-Pantz
 
Last edited by a moderator:

pantaloonz

Petty Officer 1st Class
Joined
Nov 28, 2014
Messages
237
Hi all

Please disregard, I'm sending back the wiring harness and motor and going for a three wire replacement.

aww shucks, at least the freaking wiring will make sense then

-Pantz
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
18,074
Just opening the T@T parts diagram shows the wiring diagram.
The old 3 wire is easier to use.
Did the pump or electric motor fit?
 

pantaloonz

Petty Officer 1st Class
Joined
Nov 28, 2014
Messages
237
Good Day Jerry,

The pump did fit, and it fit quite nicely. It was very hard to get the three mounting screws in because of my order of assembly.. when I get the three wire unit in I will be sure to attach the motor and reservoir the boat and THEN attach the valve body to the reservoir/motor. Those hydraulic lines don't move much but even an inch will give me a little more space to get after the bracket screws.

If you attach the motor and reservoir to the valve body first; getting the screws in the bracket is a HUGE pain. Not to mention those brackets have a very lousy design (moving a wrench 1/8th of a turn at a time)

In regards to the trim motor: I *think* it's a bum unit:

I looked up numerous wiring diagrams, and consulted this site and found an awesome post on how to try and get the pump to work.
However, In every configuration I tried all I was getting was a "CLICK" on the damn motor. It would click trying to tilt up, then do nothing if I tried again, it would then "CLICK" again when I tried to tilt down. So it was getting power but I did not hear the telltale sounds of a pump actually working! I got this behavior going to straight to battery, or getting power from the starter solenoid side and grounding to the block (from another diagram)

So I saw a post about going straight to battery using jumper cables (power to one wire ground the other just for simple test) Same thing. CLICK, CLICK CLICK but did nothing. After a lot of swearing, I walked away before I lost my cool.. The three wire is on the way, and I have plenty of interior work to keep me busy.

Would you agree that the straight to battery test would confirm a bad motor?

-Pantz
 

pantaloonz

Petty Officer 1st Class
Joined
Nov 28, 2014
Messages
237
HI

This thread is complete.

I got a 3 wire motor, it appeared to be a better overall contstructed piece of hardware.
Hooked up up directly to a battery and it worked fine.

Connected it to the valve body (no problems)
Connected the bracket to boat (pain but done)
Wired it up (wrong wires at first)

Tested: needed to .. uhm work the fluid in? It pissed and moaned and groaned at me a little. But once the lines got filled, and I topped off the resevoir. It runs better than my four winns trim unit!.

I'm a happy camper.

Morale of the story, replace with "like parts"

I was also able to remove like 6 feet of Extra cabling :)
Works from the helm now it's all good!

Thank you
-Pantz
 
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