Power trim relay unit

[AlbertaMark]

I have a 1982 Johnson 115 hp and the power trim failed. The unit was rusted inside and some wire became broken. I have attempted to replace the entire unit (Fuse, barrier strip, and the relays) but am told that the unit is obsolete. The relays still work and I cold use them or replace them (they are available) but the wiring is a bit of a mystery. The motor model is J115TLCNB. What I am hoping for is a picture of the wiring and/or if someone has the unit . ... Or, is there another relay that would work? This unit is under the real housing of the boat. Any assistance is appreciated.

 

[Scott Danforth]

Those look standard 40 amp VF4 relays. About available everywhere.

About $2 each retail

If they are 70 amp relays, the center row of contacts are 3/8" wide. Those are about $4

 

[Chris1956]

New PTT motors are 2 wire, like yours. Older engines usually have 3 wire PTT motors.

Consequently, when you buy a replacement PTT motor for an older motor, many of them come with a new wiring harness to convert old engines with 3 wire PTT motors to 2 wire motors.

You may be able to get one of these replacement wiring harnesses for your current PTT motor. Check ARCO and Sierra, and see what they have. I would expect them to be universal or nearly universal.

 

[AlbertaMark]

New PTT motors are 2 wire, like yours. Older engines usually have 3 wire PTT motors.

Consequently, when you buy a replacement PTT motor for an older motor, many of them come with a new wiring harness to convert old engines with 3 wire PTT motors to 2 wire motors.

You may be able to get one of these replacement wiring harnesses for your current PTT motor. Check ARCO and Sierra, and see what they have. I would expect them to be universal or nearly universal.

Thanks for the information. I tried both and no luck to date.

 

[Scott Danforth]

2 wire motors and 3 wire motors are both easy to control with a pair of relays

 

[Chris1956]

Here are two trim wiring harnesses for Mercury OBs. I would expect you could find one for Johnnyrudes as well. I looked on the crowleymarine site, found the OEM harness for a Mercury motor which has a 2 wire PTT motor, and searched for it on amazon.

Amazon.com

Amazon.com

 

[Chris1956]

If you don't like those, how about this one?

Amazon.com