OMC IO= 235 HP --- electrics?

[Boat Doctor1]

Need to know where the trim system (not tilt) gets its power from?? Battery has only 2 leads to back of engine (solenoids) . No Fuses or any circuit breaker (like new models) this is like a 87/89 model boat. I have no power to the "Trim Panel switch" on dash or gagur on same. Where does the power to that switch come from?? wiring diagram ?anyone??? Thanx.

 

[southkogs]

'87 could still have been a Stringer drive, but by '89 it would be a Cobra. Totally different systems. You have rams on the drive, or a big rubber boot on the back?

 

[Boat Doctor1]

Th a stringer drive (white) electric shift--I do not see any circuit breakers or any 50 amp fuses (in holders) on engine. Need wiring ske for power feeds to tilt -- trim works fine. The trim is the kind that goes under motor mounts. The switch on dash has no power-need to see where that power comes from. There are some brown (monkey balls) on the trim & also tilt system yet all test good on both sides. I will also add - when i use a jumper across the trim solenoids they both work fine -so it IS a power from the switch to the solenoids -I just need to locate where the power feeds from to that switch. Thanx.

 

[southkogs]

Some Stuff HERE for you to look through - I'm thinking the diagrams are in that thread somewhere. BUT - You don't (or shouldn't) have an electric shift if it's a drive from after 1976 or 1977. The 1980's units should be full mechanical.

Do you have the jackscrew type trim or the hydraulic?

 

[Boat Doctor1]

This has the electric shift & has the trimpump with I believe jack screws -its under the motor mount areas on each side i believe. boat may be an 76? guessing

 

[southkogs]

Electric shift drive will look like (or real similar to) this:


Fast ID (though not the only) is no thru-hub exhaust.

Jackscrew Selectrim will look like this:



Under both mounts, I'm not sure what that is. I've never had the hydraulic system, so I don't know it real well.

And I think even in electric shift ('64 - '76) which 235 it is matters. There should be a tag in the engine bay - mine's on the rear port motor mount - that gives you an engine ID number. That'll tell you what it is specifically. Pictures would help our guessing too

 

[Boat Doctor1]

ITS THE WHITE ONE - THE jACK SCREW IN PIX ABOVE =is not THE ONE i HAVE SO HYDRUALIC TYPE TRIM. I cannot get the electrical diag to download says virus / ad ware. so it gets stopped from downloading.

 

[southkogs]

Maybe this:

 

[Boat Doctor1]

Thats it!! now - would you have the ske for the trim gague & switch panel>?? I will also ask-? the ske here= shows fuses ( 2 ) just above the starter- tilt solenoid to right of the tilt solenoid?= I dont seem to have those on this engine? yet?? as im getting old now = there are what we tecks used to call " monkey balls" i believe from memory were fuse types - they were looking like a brown device surrounded in some sort of epoxy or potting material? Not actually in a type of "Fuse Holder" as we see in later models. am I correct on those being fuses? as I have checked for power thru each side of those & all's good - I have just no power to the trim switch to activate the trim solenoids. Im guessing this is a little earlier model than the ske here? due to those type brown fuses?

 

[southkogs]

I don't have anything for the panel - and honestly, I'm not sure about the fuses. My system is different than what you have.

 

[Boat Doctor1]

Hi south= see above =also= the great ske u sent - by the way extremely helpful !! Thanx= i do also need the ske for the trim / tilt dash wiring bundle= appears to also go to controll box (shifter)--This has the tilt gague also & power is non existant to it. wires into main bundle to rear of engine & seems there is another small wire bundle (also factory) going to controll shifetr =likely neutral safety switch? Thank you -ifter testing I still have no power to shift wiring (disconected for test) At rear engine area = blue & green wires. Both shift coils test 15-19 ohms - again disconected. I dont have a value for those either. Thank you.

 

[southkogs]

For the shifter, read through THIS topic and see if that gets you any ideas.