• If this is your first visit to the iboats.com Boating Forums, be sure to check out the FAQ. To post a question or comment, begin by signing up. To start viewing messages, select the forum that you want to visit from the selection below.
  • ALL iboats Forum Members and Guests:
    To show our appreciation for your participation in the Forums, we're offering an exclusive Forums-only discount good for an additional 5% off your iboats.com order for a limited time.
    To redeem, simply call our Customer Service Team at 800-914-1123 (Open M-F, 9am - 8pm Eastern Time) and mention the Forums 5% off discount. Offer excludes engines, trolling motors, and electronics.

Announcement

Announcement Module
Collapse

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 threads or hijack existing threads. Old threads of a technical nature are like a library book, Please do not write in them.

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

3. Do not take over someone elseís thread (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 thread of your own.

4. If you have a question for the original poster (OP) and the thread 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 thread.

5. By starting your own thread, 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 thread. And those answers will be specific to your particular issue.

6. Please do not post to threads that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any thread 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 thread.

7. Posting at the end of any thread is considered to be hijacking the original posters thread which in turn subjects the thread 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 thread asking you not to reply to old threads. The Red banner will read: Please note this thread has been inactive for 90 days. For the best results, please start a new thread.

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

Additional forum rules linked below.
http://forums.iboats.com/forum-rules-guidelines-405/
See more
See less

1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts


  • 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

    Hey All,My 1979 Mercury 40HP's wire's are all getting old, and starting to fall apart.I pulled off the Ignition Switch box hoping that I would be able to get to the wires inside threw the bottom, but it looks like the bottom of the Ignition Switch box is siliconed in...Is there a way to replace the wires? or would i need to replace the entire Ignition switch box?Thanks.-TheChad
    2006 Lowe Fish & Ski (FS175)
    -Mercury 115HP EFI 4-Stroke
    --Mounted 3rd Hole From The Top (Middle Hole)
    -Mercury Vengeance SS Prop (16 Pitch)
    -Lowrance LCX-26C HD


  • #2
    Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

    Chad it's about impossible to make a permant repair to those wires, for some reason most will not solder well and crimpons are temperarey at best

    Comment



    • #3
      Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

      I was looking for a Replacement, its model 332- 4911. I found several places offering a Non-OEM replacement..Are thease reliable? Or should i stick with the OEM?Thanks-TheChad
      2006 Lowe Fish & Ski (FS175)
      -Mercury 115HP EFI 4-Stroke
      --Mounted 3rd Hole From The Top (Middle Hole)
      -Mercury Vengeance SS Prop (16 Pitch)
      -Lowrance LCX-26C HD

      Comment



      • #4
        Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

        If it's just the insulation that's bad you can cut off the terminal and use slide on some heat shrink tubing. You can solder on new sections but you'll need a good soldering iron, not the pencil type. I used a solder station and 750deg tip to redo mine.

        Comment



        • #5
          Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

          Chad Rapair/CDI are better than original

          Comment



          • #6
            Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

            Originally posted by Baitis: If it's just the insulation that's bad you can cut off the terminal and use slide on some heat shrink tubing. You can solder on new sections but you'll need a good soldering iron, not the pencil type. I used a solder station and 750deg tip to redo mine.
            That's actually a great Idea, I didn't even think about that!I have a really good Hakko Soldering station.Which is better to do, Leave the origional wire, and use heat shrink to replace the crusty insulation, or cut the wire off near where it enters the Ignition Switch Box, and solder on new wire?Thanks for the help.-TheChad
            2006 Lowe Fish & Ski (FS175)
            -Mercury 115HP EFI 4-Stroke
            --Mounted 3rd Hole From The Top (Middle Hole)
            -Mercury Vengeance SS Prop (16 Pitch)
            -Lowrance LCX-26C HD

            Comment



            • #7
              Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

              Originally posted by Laddies: Chad Rapair/CDI are better than original
              Are you saying repairing the wires on mine is better than replacing it with a new unit, or are you saying the Aftermarket CDI's are better than the OEM CDI's??Thanks,-TheChad
              2006 Lowe Fish & Ski (FS175)
              -Mercury 115HP EFI 4-Stroke
              --Mounted 3rd Hole From The Top (Middle Hole)
              -Mercury Vengeance SS Prop (16 Pitch)
              -Lowrance LCX-26C HD

              Comment



              • #8
                Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

                No replace it with CDI or Rapair products

                Comment



                • #9
                  Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

                  Originally posted by Laddies: No replace it with CDI or Rapair products
                  Oh, Repair CDI is a brand... Do you know their websight?The 2 Non-OEM brands I was seeing were Sierra & CDI..The CDI brand is about $125-$170 and says "Requires wire Splicing", the Sierra brand is about $150-$175 and is a "Direct Replacement" No splicing.The Sierra brand, looked like the OEM Switch box, the CDI brand looks nothing like the OEM switch box.Are the non-OEM just made better, or is there something performance wise that is better?P.S. Could the switch box be causing me not to get spark? Is there any way to test the switch box for functionality?Thanks again,-TheChad
                  2006 Lowe Fish & Ski (FS175)
                  -Mercury 115HP EFI 4-Stroke
                  --Mounted 3rd Hole From The Top (Middle Hole)
                  -Mercury Vengeance SS Prop (16 Pitch)
                  -Lowrance LCX-26C HD

                  Comment



                  • #10
                    Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

                    P.S. Could the switch box be causing me not to get spark?
                    absolutely. without it, spark does not exist

                    Comment



                    • #11
                      Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

                      Originally posted by myoutboards:
                      P.S. Could the switch box be causing me not to get spark?
                      absolutely. without it, spark does not exist
                      Is there a way to test the switch box to verify that it is, or is not functioning correctly?Thanks-TheChad
                      2006 Lowe Fish & Ski (FS175)
                      -Mercury 115HP EFI 4-Stroke
                      --Mounted 3rd Hole From The Top (Middle Hole)
                      -Mercury Vengeance SS Prop (16 Pitch)
                      -Lowrance LCX-26C HD

                      Comment



                      • #12
                        Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

                        Chad the stator and trigger can be tested with a OHM meter but a DVA is much better, do you have either available to you--Bob

                        Comment



                        • #13
                          Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

                          Originally posted by Laddies: Chad the stator and trigger can be tested with a OHM meter but a DVA is much better, do you have either available to you--Bob
                          I have Multi-Meter, that has an OHM Meter...What is a DVA?So how do i test the stator and trigger?(I assume testing the stator and trigger, will show if the Switch Box is bad?)Thanks,-TheChad
                          2006 Lowe Fish & Ski (FS175)
                          -Mercury 115HP EFI 4-Stroke
                          --Mounted 3rd Hole From The Top (Middle Hole)
                          -Mercury Vengeance SS Prop (16 Pitch)
                          -Lowrance LCX-26C HD

                          Comment



                          • #14
                            Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

                            Chad, most people don't have a DVA (direct voltage adapter) when used with a voltmeter it reads peak voltage, so lets go with ohms first disconnect the blk/yellow wire from the box its the kill wire and test for spark no spark the kill circurt is not shortedNext ck the stator,bll/yellow to grd = 3250-3650 ohmsblk/white to grd = 200-250 ohmsNext ck the trigger,brn/yellow to brn/white = 750-1400 ohmsbrn/yellow to grd = openbrn/white to grd = openif these tests are OK then the switch box is no goodthis test is for no spark on either cyl it takes a DVA to ck spark on only one cyl---Bob

                            Comment



                            • #15
                              Re: 1979 Mercury 40HP - Ignition Switch Box, Replacing wires...

                              Originally posted by Laddies: Chad, most people don't have a DVA (direct voltage adapter) when used with a voltmeter it reads peak voltage, so lets go with ohms first disconnect the blk/yellow wire from the box its the kill wire and test for spark no spark the kill circurt is not shortedNext ck the stator,bll/yellow to grd = 3250-3650 ohmsblk/white to grd = 200-250 ohmsNext ck the trigger,brn/yellow to brn/white = 750-1400 ohmsbrn/yellow to grd = openbrn/white to grd = openif these tests are OK then the switch box is no goodthis test is for no spark on either cyl it takes a DVA to ck spark on only one cyl---Bob
                              Thanks for the help Laddies,I could not find those exact color wires.. I've taken a picture of the wires to show you what I am working with, Maybe that will help... Click Here For The PicturesThanks again,-TheChad
                              2006 Lowe Fish & Ski (FS175)
                              -Mercury 115HP EFI 4-Stroke
                              --Mounted 3rd Hole From The Top (Middle Hole)
                              -Mercury Vengeance SS Prop (16 Pitch)
                              -Lowrance LCX-26C HD

                              Comment

                              Working...
                              X