LesG Posted October 25, 2015 Share Posted October 25, 2015 I'm using the M3DK version Emerald, and remember there is a 'change gear' option for a shift light in there. Before I go and make a mountain out of a molehill, can anyone advise me about the best way of carrying out this little job, particularly a recommended big, bright led? There seem to be so many different ones to choose from, some requiring resistors etc.Cheers, Les. Link to comment Share on other sites More sharing options...
Mankee Posted October 25, 2015 Share Posted October 25, 2015 Have you red the M3D manual, Les? The ECU just outputs a switched earth to the bulb when the set shift light rpm is reached. The other side of the bulb is just connected to a switched 12V.Page 50: http://www.emeraldm3d.com/media/software-manuals/Emerald%20M3DK%20Manual%20v5.pdfLongacre from JJC/Demon Tweeks do some socking great 19mm warning lights, although I don't use one at the moment, as it is sat on the shelf:http://www.jjcraceandrally.com/race/dash-warning-lights/longacre-gagelite-dash-warning-lights Link to comment Share on other sites More sharing options...
LesG Posted October 25, 2015 Author Share Posted October 25, 2015 Nice one Mankee, I would read the manual if I could find it! I only ever find things when I'm looking for something else....... Link to comment Share on other sites More sharing options...
Titanium7 Posted October 25, 2015 Share Posted October 25, 2015 I used the emerald signal on the last car, bought a high intensity red LED and appropriate resister and fitted into the dash between the speedo and rev counter, it certainly caught your attention . Link to comment Share on other sites More sharing options...
LesG Posted October 25, 2015 Author Share Posted October 25, 2015 Can you remember where you bought the led and resistor? Link to comment Share on other sites More sharing options...
Titanium7 Posted October 25, 2015 Share Posted October 25, 2015 Loads on fleabay, some even come pre-wired, if I remember correctly I used an 8mm clear one that when on was really bright. I also used the appropriate back plastic holder. If you use a 12v led, technically you don't need a resistor but you may want to put in a low value one in such at 10ohms. if you use a lower voltage led Ohm's law will indicate the size of resistor, plenty of calculators on the web - R=V over I. Calculator Link to comment Share on other sites More sharing options...
LesG Posted October 26, 2015 Author Share Posted October 26, 2015 Thanks for the link, I plumped for a 10mm, 12v pre-wired with plastic bezel, yellow in colour, £1.99 delivered! I'll give it a go and see how I get on, may even get another in green to swap the old indicator tell-tale bulb, might make me switch it off more often if I can see it flashing lol! Link to comment Share on other sites More sharing options...
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