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    About vtec indicator light

    Hi,i saw at TEG TIPS have a topic about vtec indicator light DIY,
    But without picture overthere,
    Hope some one can help me...

    I have a 12V indicator light,
    Should i just direct wiring the light to ECu or need to use a relay for better?
    If using relay,
    Picture as below it's OK?


    Thanks a lot

    #2
    Use ECU output to trigger relay, [#86] but get power for relay, [#30] from an ign. source.94

    Comment


      #3
      Originally posted by fcm View Post
      Use ECU output to trigger relay, [#86] but get power for relay, [#30] from an ign. source.94
      Really thanks a lot about your reply...
      May i ask you a favor,
      Can you tell me the easy way please?
      I think is my language problem because nomatter how many time i read your post,
      I really cant understand it...............
      Please pardon me about that..........

      Comment


        #4
        The only thing you need to change, [from diagram posted] is the power for the relays #30 terminal, you now have it comming from the ECU, [split for #30 and #86] leave #86 from ECU, [relay control] but get power for #30 from someplace else, it can be any power that is hot when ign. switch is in the run position, [engine running].

        That way the ECU is only supplying power for the relays coil, [less then 250mA] and power for the bulb comes from another source. 94

        Comment


          #5
          oooo i want

          Comment


            #6
            Originally posted by fcm View Post
            The only thing you need to change, [from diagram posted] is the power for the relays #30 terminal, you now have it comming from the ECU, [split for #30 and #86] leave #86 from ECU, [relay control] but get power for #30 from someplace else, it can be any power that is hot when ign. switch is in the run position, [engine running].

            That way the ECU is only supplying power for the relays coil, [less then 250mA] and power for the bulb comes from another source. 94
            Thanks again...
            Picture below it's alright?

            [#30]--key ignition
            [#87]--12V bulb
            [#86]--VTEC wire(Green & white) from ECU
            [#85]--ground


            PS:Need to add any FUSE to prevent short circuit will effect ECU BOOM???Or just using 12V 40A relay only?

            Comment


              #7
              Install a 3A fuse on the lead from the ign., [#30] use 2nd ign. free pin on the under dash fuse box.

              No fuse is needed on the ECU lead to the relay but a 1A diode should be installed before the relay, [#86], this will prevent "back-feed" from the relay to the ECU or vtec solenoid. 94

              Comment


                #8
                Originally posted by fcm View Post
                Install a 3A fuse on the lead from the ign., [#30] use 2nd ign. free pin on the under dash fuse box.

                No fuse is needed on the ECU lead to the relay but a 1A diode should be installed before the relay, [#86], this will prevent "back-feed" from the relay to the ECU or vtec solenoid. 94
                Thanks again and again.....
                Totally understand all your sharing....
                I will follow step by step with some snapshot,
                And post on here...
                And hope some one can use it...

                Comment

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