STaylor Posted December 20, 2021 Share Posted December 20, 2021 I’m a newbie to Caterham having only bought her, a 1992 supersprint crossflow this summer. Now winter here I am looking to make a few changes.I would like to add a button start, I have read the forums and the piece by Tony Cummings which states it applies to K series. It seems to suggest it different for a crossflow (I am a novice with car electrics so please be gentle with me) will the wiring be different, would it benefit from connecting to a relay? And if so where would I attach a relay as a good location also would I need to use a relay holder to connect to or just attach the relay to the bulkhead?Thank you in anticipationS.Taylor Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 20, 2021 Member Share Posted December 20, 2021 Welcome.Let me know if you would like a wiring diagram for that Seven.And do you have a multimeter?I wouldn't expect anything unusual about fitting this to a Crossflow Seven. Are there any instructions for the new switch, and do they include a maximum current rating?Jonathan Link to comment Share on other sites More sharing options...
STaylor Posted December 20, 2021 Author Share Posted December 20, 2021 Thank you JonathanYes I do have a multimeter, the start button is one from 12volt planet which didn't come with any instructions but its rated at 50ampsA wiring diagram would be very useful thank youKind Regards Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 20, 2021 Member Share Posted December 20, 2021 Please send me a Private Message with your email address.Jonathan Link to comment Share on other sites More sharing options...
Leadership Team Mcalvert Posted December 21, 2021 Leadership Team Share Posted December 21, 2021 Hi, and welcome! Have you seen this guide here? It too refers to the K Series but I can;t think of any particular reason why the Crossflow would be electrically different. Best of luck! Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 21, 2021 Member Share Posted December 21, 2021 What Michael says.Do you want the old starter switch to continue to work or only the new one?How do you want the ignition to be switched?Could you add a link to the new switch, please.Jonathan Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 21, 2021 Member Share Posted December 21, 2021 You've now got the point to point wiring diagram for the Seven. That diagram uses one or two letter abbreviations to show the colour of each wire: the main colour and the trace colour if there is one. Those colours and abbreviations are given here. Watch out for the abbreviations for the three colours that begin with B!Use the page from the Guide with the components numbered to find the components of interest and where each end of the wires is connected. First on the diagram and then on the car.Jonathan Link to comment Share on other sites More sharing options...
STaylor Posted December 21, 2021 Author Share Posted December 21, 2021 Thank you all for your great help in this.I was sweating that I would do more damage than good as all references seem to suggest K series engines and when looking at start buttons online for other cars they all seem to suggest using a relay so I was very confused.Special thanks to Jonathan and Michael who have put my mind at rest and I will follow Tony Cummings article and without using a relay.Happy Christmas allKind RegardsSi Link to comment Share on other sites More sharing options...
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