Mercruiser 5.7TKS Engine wiring diagram

[DAMIEMARIAH]

Hi All,
Picked up my new ish (100hrs) Mercruiser 5.7 2005 tks, i am retrofitting in place of a 97 volvo penta 5.7gs, on the volvo engine wiring loom the trim pump connected into a 2 pin coupler that came from the volvo style control box that was mounted to the riser and the trim level sender again connected into the loom from a 2 pin plug behind the coil.
I cant seem to see anything obvious on the mercruiser wiring, does anyone have any suggestions or indeed a wiring diagram for both engines.
Many Thanks
Damian.

 

[Don S]

Re: Mercruiser 5.7TKS Engine wiring diagram

Just hook the trim pump red wire directly to the battery or common terminal of a battery switch, and the negative to the engines ground terminal. Use a fuse the same size of your Volvo circuit breaker.
Just an FYI, with Merc, years means nothing, it's all serial number. Volvo you need full model number or serial number. Again year means nothing and both Merc and Volvo change things yearly, by serial number range.

 

[DAMIEMARIAH]

Re: Mercruiser 5.7TKS Engine wiring diagram

Thanks Don,
The other question is the trim sender,i am guessing thatthe volvo wiring for the sender runs around the engine loom and enters the 10 pin connector on the control box,
Do you have any idea what the colours of the 2 wires would be in the 10 pin plug, once i know i can enter the 10 pin plug and add to the new loom.
Thanks.

 

[DAMIEMARIAH]

Re: Mercruiser 5.7TKS Engine wiring diagram

Just an FYI, with Merc, years means nothing, it's all serial number. Volvo you need full model number or serial number. Again year means nothing and both Merc and Volvo change things yearly, by serial number range.

Merc engine no OW352124
Volvo 5.7GSPLKD

Thanks.

 

[Don S]

Re: Mercruiser 5.7TKS Engine wiring diagram

The 10 pin harnesses are almost identical. The only difference is the alarm wire for Volvo is tan with a black stripe, Merc uses tan with a blue stripe.
Brown with a white stripe (brown/white) is for the trim sender.

 

[Don S]

Re: Mercruiser 5.7TKS Engine wiring diagram

Here is the wiring diagrams for both engines.

View attachment 5.7 TKS.pdf

View attachment 5.7GS.pdf

 

[DAMIEMARIAH]

Re: Mercruiser 5.7TKS Engine wiring diagram

Here is the wiring diagrams for both engines.

View attachment 183070

View attachment 183071

You're a star!
Thanks Don.