Tartanbj Posted May 19, 2020 Share Posted May 19, 2020 HiIve been trying to fit the Ace shift lights to 310RI found the right 3 pin connector under dash to right of dials but when I fit the lead from ACE control box I get no reading on Revs from engine and the Rev counter on dash stops working. Clearly the power is working as I get the 3 question marks on digital read out but no rev reading. Anyone had similar challenges and found a solution. Don't want to splice into existing cables when there is a connector that's supposed to to the job. cheersBruce Link to comment Share on other sites More sharing options...
ChrisC Posted May 19, 2020 Share Posted May 19, 2020 Hi BruceNot going to be an easy one to diagnose. Lack of up to date wiring diagrams and recent ECU changes are some of the hurdles you face. I would want to see if there is a signal on the white and black stripe wire to see if the problem lies with the car or the shift lights (or the configuration of the lights). I would use an oscilloscope for this, but that's not exactly a common tool to own :-( Can you checked the settings of the Ace with a know working example on a 310R?Chris, Link to comment Share on other sites More sharing options...
Obodiah Posted May 19, 2020 Share Posted May 19, 2020 I've just fitted this unit on my 420R. On my loom the three wires were each terminated in a separate connector and were cable tied together along with anothe red/white cable that was terminated with heat shrink (ie not to be used). These are the connections I used:Green - liveBlack - EarthBlack/White - tacho feed to ACEs unit Link to comment Share on other sites More sharing options...
Obodiah Posted May 19, 2020 Share Posted May 19, 2020 I've just fitted this unit on my 420R. On my loom the three wires were each terminated in a separate connector and were cable tied together along with another red/white cable that was terminated with heat shrink (ie not to be used). These are the connections I used:Green - liveBlack - EarthBlack/White - tacho feed to ACEs unit Link to comment Share on other sites More sharing options...
aerobod - near CYYC Posted May 19, 2020 Share Posted May 19, 2020 A 1K pull-up resistor may be required, I know I had to fit one when changing the tacho feed to my new ECU:https://www.lotus7.club/forum/techtalk/aces-sure-shift-2-wiring Link to comment Share on other sites More sharing options...
Tartanbj Posted May 19, 2020 Author Share Posted May 19, 2020 Thanks for replies folks. Will have a look for other cables as per Obodiah post. See if I can find them. Maybe the connector I used is not right one after all. cheersBruce Link to comment Share on other sites More sharing options...
Tartanbj Posted May 19, 2020 Author Share Posted May 19, 2020 Thanks I'll look for the 3 cable tied leads. I found a connector that I thought was the one ta Link to comment Share on other sites More sharing options...
Tartanbj Posted May 19, 2020 Author Share Posted May 19, 2020 Thanks I'll look for the 3 cable tied leads. I found a connector that I thought was the one ta Link to comment Share on other sites More sharing options...
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