justin sue Posted January 17, 2011 Report Share Posted January 17, 2011 I currently have aux output 5 on my xtreme g4 hooked up to the tacho input, but it doesnt drive the MR2 tacho. what do i need to change on the MR2 tacho board to get it to accept the low level signal coming out of the link ecu since from what i understand the MR2 has a high level drive coming from the ignitor. Quote Link to comment Share on other sites More sharing options...
Cameron Moore Posted January 17, 2011 Report Share Posted January 17, 2011 Hi Justinsue, Yes you are correct. You should find that the incoming signal onto the dash pcb will go straight to a resistor, if you bypass this resistor and put the signal in on the other side of it you should be good. -Cameron Quote Link to comment Share on other sites More sharing options...
justin sue Posted January 17, 2011 Author Report Share Posted January 17, 2011 should i replace that resistor with a lower value one or just drop the duty cycle of the signal from the settings menu of the ecu? Quote Link to comment Share on other sites More sharing options...
Cameron Moore Posted January 17, 2011 Report Share Posted January 17, 2011 Hi Justin, Without scoping what the original signal looked like on the other side of that resistor it would be hard to know what duty cycle or resistor it would need. I would think it would be fine without the extra resistor. I would also imagine that 30-50% duty cycle should be fine. -Cameron Quote Link to comment Share on other sites More sharing options...
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