Store Links Mobile - Shop Now


1 of 2 < >


The iBoats Forums will be down for maintenance starting at 1 PM MST on 12/16/2017. The estimated amount of downtime is 3 hours. Thanks for being a part of the iBoats community!
2 of 2 < >

Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Below are some additional forum policies in hopes of all iboats members will follow, Thank you.

1. Please do not reply to old topics or hijack existing topics. Old topics of a technical nature are like a library book, Please do not write in them.

2. Old topics should be considered archives and used for reference only. Please do not reply to them.

3. Do not take over someone elseís topic (aka hijack) with your own question, even if it is similar. If you have a question that has not been covered to your satisfaction in the archives, it is always best to start a new topic of your own.

4. If you have a question for the original poster (OP) and the topic is over 30 days old, send the OP a PM, he may not even visit the forums any longer, or may not notice your question in the old topic.

5. By starting your own topic, you will receive the maximum number of views by forum helpers that may not even notice your question when itís posted at the end of someone elseís topic. And those answers will be specific to your particular issue.

6. Please do not post to topics that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any topic that remains inactive for that long should be considered "dead". It is especially confusing when there is an entirely new question posted to an old topic.

7. Posting at the end of any topic is considered to be hijacking the original posters topic which in turn subjects the topic to be closed if it continues to happen thus not making it fair to the original poster in the future had for some reason he/she needed to return for additional information or provide an update of the problem solved which is always welcomed within a reasonable amount of time frame.

8. Please note that you should see a red banner pop up near the bottom of each inactive topic asking you not to reply to old topics. The Red banner will read: Please note this topic has been inactive for 90 days. For the best results, please start a new topic.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
See more
See less

Wiring Harness Question 150 EXEOM 1995

  • Filter
  • Time
  • Show
Clear All
new posts

  • Wiring Harness Question 150 EXEOM 1995

    Having issues with my warning horn. Will need to post a few questions as I go along.I have an OEM manual for the motor. You will need one also to follow me. Looking at the wiring schematic( diagram or whatever it is called)on the last page of the manual ,bottom left is the VRO plug. Off of this plug comes a tan and black bullet connector which appear to go nowhere. Above the VRO plug is the vacuum switch ( in the daigram I think it is the vacuum switch)with the tan and black wire again. My first question is what do the bullet connectors go to( the ones which appear disconnected in the diagram)? My harness has been manipulated so I need to get it right so my warning horn operates correctly. Sometimes my hot light goes on along with the horn. The engine runs fine, I have used it for the last two years as it is, it does not run hot nor do I believe there to be a fuel restriction. Just want it(the warning system) to operate should hot or restriction be an issue.

  • #2
    Re: Wiring Harness Question 150 EXEOM 1995

    I am looking at the OEM manual for my 94 175 motor and it looks just like the diagram you are describing. I can trace the wires on my motor tomorrow if you would like but I am almost certain that those two wires go to the remote oil tank low level sensor switch.


    • #3
      Re: Wiring Harness Question 150 EXEOM 1995

      Thank you for taking the time to check the manual. That makes sense to me. I appreciate you checking.Let me know.Hope to tackle this this weekend.


      • #4
        Re: Wiring Harness Question 150 EXEOM 1995

        I've got two of the same motors J150EXEOM and her twin. No lights though. Do you have the "System Check" gauges?


        • #5
          Re: Wiring Harness Question 150 EXEOM 1995

          Yes, I do have the System Check gauges.


          • #6
            Re: Wiring Harness Question 150 EXEOM 1995

            I had a chance to look at my motor today and verified that those wires do go to the low oil alarm at the oil reservoir.


            • #7
              Re: Wiring Harness Question 150 EXEOM 1995

              what is the temp of the motor when horn sounds??? if the vacum is not pluged in it will not sound a horn ( black is always ground on OMC.)


              • #8
                Re: Wiring Harness Question 150 EXEOM 1995

                Then the vertemp alarm should have nothing to do with the oil sender. It the oil level sender is bad it will give a low oil alarm. Unplugging it will silence the alarm.

                Try grounding out the tan wire to the temp sender to the block. This should cause an overtemp alarm to sound.


                • #9
                  Sign up today
                  Re: Wiring Harness Question 150 EXEOM 1995

                  Ok Thank you. So far as I have checked the tan wires going to the temp senders.When grounded they do not sound the alarm. They do carry about 4 volts . Looking near the harness under the soloniod there is the tan and black wire, both are cut and unconnected( this tan wire also carries about 4 volts). Next to them again is what I think is the vacuum switch wires(black and tan) returning from the switch to the harness, they appear to have been spliced or at least worked with at one time as they do not have their original connectors on them. I am going to remove the lower cowling to follow my wires. Hope to post a picture later on. Its a rainy day here in SoCal so may not be able to get to it today. The low oil alarm is an intermittent horn, I have never had that sound. I have had the continuous hot/ fuel restriction horn sound though. Thanks again for your replies your input is appreciated.