Mohamed Maher Posted July 10, 2017 Report Share Posted July 10, 2017 (edited) Hi everyone , I work on EVO 7 GTA with manual Trans and GTA harness i used G4+ and use EVO 7 plugs and pinout but no speedo signal The EVO 7 speedo use 12v signal but the link G4 use ground signal for speedo thats another issue anyone have solution ???? Edited July 10, 2017 by Mohamed Maher Quote Link to comment Share on other sites More sharing options...
Mohamed Maher Posted July 11, 2017 Author Report Share Posted July 11, 2017 Anyone have idea about my problem ????? Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 12, 2017 Report Share Posted July 12, 2017 Can you elaborate a little... What do you mean by "no speedo signal"? There is no wheel speed displayed in PCLink? or there is no speed displayed on the dashboard? Quote Link to comment Share on other sites More sharing options...
Mohamed Maher Posted July 12, 2017 Author Report Share Posted July 12, 2017 no wheel speed on both i try to use pwm test on dash but no read on the dash and from wiring i see that the dash speedo work on 12 v signal not aground signal the main problem that before using the g4 on stock ecu there was mistake in the speedo reading i try to use the speedo meter signal as DI and use aux output to the dash to make it right but no reading on the dash Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 13, 2017 Report Share Posted July 13, 2017 i try to use pwm test on dash but no read on the dash and from wiring i see that the dash speedo work on 12 v signal not aground signal The low side drive auxilary outputs output both 12V and Gnd. They have a weak pullup to 12V. So when Aux is off it will put out 12V, when Aux is on it will put out GND. Maybe your speedo needs a stronger pullup? You could try something like a 1Kohm resistor connected from the aux output to a +12V source. Quote Link to comment Share on other sites More sharing options...
Mohamed Maher Posted July 13, 2017 Author Report Share Posted July 13, 2017 Thanks man I will try Quote Link to comment Share on other sites More sharing options...
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