Scamby Posted June 13, 2020 Report Share Posted June 13, 2020 Greetings, I am starting to troubleshooting something on my car and I noticed this jumper in my ECU. I looked at the manual and I don't find any information about what is that jumper for. It said MX5 1800 and it is disconnected. Please advise. Regards. Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 13, 2020 Report Share Posted June 13, 2020 The jumper connects a pull-up to pin 9, it is needed to make the tacho work on some 1800cc MX5's. Quote Link to comment Share on other sites More sharing options...
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