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DT125R FORUM

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  4. Derestrict yamaha dt 125 r 1997

Derestrict yamaha dt 125 r 1997

Scheduled Pinned Locked Moved Derestricting
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  • S SpookDog

    @Mr-Shadi

    It might be a different colour on account of the weird RN thing…

    From what I’ve read people move the reed switch then cut & earth a black/green wire…

    S Offline
    S Offline
    SpookDog
    wrote on last edited by
    #44

    Hang on bud! Your bike is a Dt125RN you said? Did you mean a Dtr125 3rn? This would make more sense! 🙄

    S 1 Reply Last reply
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    • S SpookDog

      Hang on bud! Your bike is a Dt125RN you said? Did you mean a Dtr125 3rn? This would make more sense! 🙄

      S Offline
      S Offline
      SpookDog
      wrote on last edited by SpookDog
      #45

      Just counted CDI wires on the 3rn diagram in my Haynes manual and it says 11 wires from the CDI. How many have you got?…
      I’m just curious cause it doesn’t show the reed switch or any wiring to the speedo on the diagram, guess they wouldn’t show the restriction though! 🙂 …

      Mr ShadiM 1 Reply Last reply
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      • S SpookDog

        Just counted CDI wires on the 3rn diagram in my Haynes manual and it says 11 wires from the CDI. How many have you got?…
        I’m just curious cause it doesn’t show the reed switch or any wiring to the speedo on the diagram, guess they wouldn’t show the restriction though! 🙂 …

        Mr ShadiM Offline
        Mr ShadiM Offline
        Mr Shadi
        wrote on last edited by
        #46

        @SpookDog it has 18 wires. 3 cdi connectors with 6 wires each.

        1 Reply Last reply
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        • Mr ShadiM Mr Shadi

          @SpookDog i also looked under the speedo and there is a white little box with blue and green red wire coming out of it. i tought it was a light but when i looked it had a little space between 2 metal thingies in it and it was covered with glass. Is that the reed switch?

          markus.wM Offline
          markus.wM Offline
          markus.w
          wrote on last edited by
          #47

          @Mr-Shadi this is a reed switch. If you look at it, it looks to be a broken fuse. When the speedo hits 61 mph it sends an electro magnetic signal and closes the switch which retards the ignition and closes the powervalve back up. Either move it far away from the clocks so the magnet can't reach it or cut it off and keep the wires apart.

          Mr ShadiM 2 Replies Last reply
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          • markus.wM markus.w

            @Mr-Shadi this is a reed switch. If you look at it, it looks to be a broken fuse. When the speedo hits 61 mph it sends an electro magnetic signal and closes the switch which retards the ignition and closes the powervalve back up. Either move it far away from the clocks so the magnet can't reach it or cut it off and keep the wires apart.

            Mr ShadiM Offline
            Mr ShadiM Offline
            Mr Shadi
            wrote on last edited by
            #48

            @markus-w if i cut it off the bike wount rev over 6k and if i move it it randomly restricts it to 6k rpm. then i need to come to a stop and it revs over 6k.

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            • markus.wM markus.w

              @Mr-Shadi this is a reed switch. If you look at it, it looks to be a broken fuse. When the speedo hits 61 mph it sends an electro magnetic signal and closes the switch which retards the ignition and closes the powervalve back up. Either move it far away from the clocks so the magnet can't reach it or cut it off and keep the wires apart.

              Mr ShadiM Offline
              Mr ShadiM Offline
              Mr Shadi
              wrote on last edited by
              #49

              @markus-w and my reed switch allows me to go only 80km/h thats 49.7097 mph

              S 1 Reply Last reply
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              • Mr ShadiM Mr Shadi

                @markus-w and my reed switch allows me to go only 80km/h thats 49.7097 mph

                S Offline
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                SpookDog
                wrote on last edited by
                #50

                @Mr-Shadi

                We need to find out what wires need to be cut and earthed. On my tzr 4hw there are 2 wires that have been cut, joined and earthed by previous owners. A black with lavender-blue stripe and a grey…

                Mr ShadiM 1 Reply Last reply
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                • S SpookDog

                  @Mr-Shadi

                  We need to find out what wires need to be cut and earthed. On my tzr 4hw there are 2 wires that have been cut, joined and earthed by previous owners. A black with lavender-blue stripe and a grey…

                  Mr ShadiM Offline
                  Mr ShadiM Offline
                  Mr Shadi
                  wrote on last edited by
                  #51

                  @SpookDog that would be the thing if there was a good electrical scheme of my 4bl 1997 bike

                  Mr ShadiM 1 Reply Last reply
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                  • Mr ShadiM Mr Shadi

                    @SpookDog that would be the thing if there was a good electrical scheme of my 4bl 1997 bike

                    Mr ShadiM Offline
                    Mr ShadiM Offline
                    Mr Shadi
                    wrote on last edited by
                    #52

                    @Mr-Shadi in one of the manuals there is this 07b89341-0873-4a04-9968-850213697628-image.png

                    1 Reply Last reply
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                    • S Offline
                      S Offline
                      SpookDog
                      wrote on last edited by SpookDog
                      #53

                      I’ll look for a 4bl (I’ve never heard of a 4BL, you sure it’s not 4DL?) wiring diagram…

                      It is bl just checked

                      S Mr ShadiM 2 Replies Last reply
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                      • S SpookDog

                        I’ll look for a 4bl (I’ve never heard of a 4BL, you sure it’s not 4DL?) wiring diagram…

                        It is bl just checked

                        S Offline
                        S Offline
                        SpookDog
                        wrote on last edited by SpookDog
                        #54

                        What colour is the wire going to the reed switch? Also what colour wire returns from it, if different?…

                        is it red/blue?! with a white/black wire returning?!

                        1 Reply Last reply
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                        • Mr ShadiM Mr Shadi

                          @Mr-Shadi i moved the reed switch, cut wires and did a lot of things but when the reed is out of its slot the bike won't rev over 6k in 2nd 3rd 4th 5th and 6th gear, but when the reed is in its slot it only doesn't rev when 80km/h. I even pulled the reed out a little bit and it didnt rev over 6k. Very weird

                          markus.wM Offline
                          markus.wM Offline
                          markus.w
                          wrote on last edited by
                          #55

                          @Mr-Shadi you have the 4BL model, that's the later one with the reed switch but I guess you must have the restricted 3RM-10 CDI?

                          Mr ShadiM 1 Reply Last reply
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                          • Hybrid_Theory01H Offline
                            Hybrid_Theory01H Offline
                            Hybrid_Theory01
                            wrote on last edited by Hybrid_Theory01
                            #56

                            Hey guys, my CDI has 2 plugs with like 4 wires coming out and plugging into themselfs, has anyone seen this before or should I send a picture to this chat? Its at least weird but Thats how i bought the bike

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                            • S SpookDog

                              I’ll look for a 4bl (I’ve never heard of a 4BL, you sure it’s not 4DL?) wiring diagram…

                              It is bl just checked

                              Mr ShadiM Offline
                              Mr ShadiM Offline
                              Mr Shadi
                              wrote on last edited by
                              #57

                              @SpookDog sorry for not being active i had stuff to do. yeah its a 4bl not a dl, if u google 4bl this bike will come up and its exactly my bike ceaed3d7-2991-45db-8806-ec0c2fdac194-image.png and the reed switch i already drew it was green/red and a blue one

                              Mr ShadiM 1 Reply Last reply
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                              • markus.wM markus.w

                                @Mr-Shadi you have the 4BL model, that's the later one with the reed switch but I guess you must have the restricted 3RM-10 CDI?

                                Mr ShadiM Offline
                                Mr ShadiM Offline
                                Mr Shadi
                                wrote on last edited by
                                #58

                                @markus-w it has a restricted cdi but its weird that if i move the reed switch at all it dosent rev over 6k. and i was thinking if i cut the wires and leave the reed switch in its place without the wires, maybe it will work.

                                1 Reply Last reply
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                                • Mr ShadiM Mr Shadi

                                  @SpookDog sorry for not being active i had stuff to do. yeah its a 4bl not a dl, if u google 4bl this bike will come up and its exactly my bike ceaed3d7-2991-45db-8806-ec0c2fdac194-image.png and the reed switch i already drew it was green/red and a blue one

                                  Mr ShadiM Offline
                                  Mr ShadiM Offline
                                  Mr Shadi
                                  wrote on last edited by
                                  #59

                                  @Mr-Shadi i searched for wiring diagrams and i found one very pixelated one that showed the reed switch and its just 2 wires that go in to the cdi with nothing in between and there were 18 wires.

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                                  • Mr ShadiM Mr Shadi

                                    @Mr-Shadi i searched for wiring diagrams and i found one very pixelated one that showed the reed switch and its just 2 wires that go in to the cdi with nothing in between and there were 18 wires.

                                    S Offline
                                    S Offline
                                    SpookDog
                                    wrote on last edited by
                                    #60

                                    @Mr-Shadi

                                    Any progress?…

                                    It is weird that it activates if you move it away from its spot. Are there any other wires going into your speedometer apart from the read switch ones you’ve mentioned, and the two for the bulb? (blue & black on mine) I’m wondering if the ‘activator’ in the speedo is electrical or magnetic/mechanical in some way…

                                    Mr ShadiM 1 Reply Last reply
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                                    • S SpookDog

                                      @Mr-Shadi

                                      Any progress?…

                                      It is weird that it activates if you move it away from its spot. Are there any other wires going into your speedometer apart from the read switch ones you’ve mentioned, and the two for the bulb? (blue & black on mine) I’m wondering if the ‘activator’ in the speedo is electrical or magnetic/mechanical in some way…

                                      Mr ShadiM Offline
                                      Mr ShadiM Offline
                                      Mr Shadi
                                      wrote on last edited by
                                      #61

                                      @SpookDog I GOT IT! I derestricted it. It took me a long time and a lot of anger but i DID IT! I did it by cutting the reed switch wires and putting the reed switch in its place with exposed open wires. Then i turned the bike on and kickstarted it, after that i revved till it hit the rev limiter and connected the wires till the rev limiter passed 6.5K without staying stuck and taped up the wires so they don't touch (Not the wires that are on the reed switch. The ones that come to it) and put them away. now the bike accelerates beyond 80km/h 50mp/h.

                                      S markus.wM 2 Replies Last reply
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                                      • Mr ShadiM Mr Shadi

                                        @SpookDog I GOT IT! I derestricted it. It took me a long time and a lot of anger but i DID IT! I did it by cutting the reed switch wires and putting the reed switch in its place with exposed open wires. Then i turned the bike on and kickstarted it, after that i revved till it hit the rev limiter and connected the wires till the rev limiter passed 6.5K without staying stuck and taped up the wires so they don't touch (Not the wires that are on the reed switch. The ones that come to it) and put them away. now the bike accelerates beyond 80km/h 50mp/h.

                                        S Offline
                                        S Offline
                                        SpookDog
                                        wrote on last edited by
                                        #62

                                        @Mr-Shadi

                                        Sweet! I’m happy for you bud 🙂 …

                                        S 1 Reply Last reply
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                                        • S SpookDog

                                          @Mr-Shadi

                                          Sweet! I’m happy for you bud 🙂 …

                                          S Offline
                                          S Offline
                                          SpookDog
                                          wrote on last edited by SpookDog
                                          #63

                                          @Mr-Shadi

                                          So disconnecting the wires while the revs were above the limiter somehow reset the CDI?…

                                          1 Reply Last reply
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