DRE Shift lights - tachometer feed assistance required

[zoli88]

I have purchased the dre shift lights for a 2012 academy car (sigma engine 125bhp) roadsport.

I am trying to locate the source of the tachometer feed that will work with the dre shift lights, ideally from the rear of the tachometer.

Does anyone know which wire is the correct feed and has anyone already fitted the unit to their sigma based Caterham?

Any help is appreciated, and if you have pictures that would be really helpful.

[zoli88]

Thanks Gents, I am going to be attempting the installation this weekend.

If anyone has any pictures to aid the wire selection that would help, as I believe I have two Black and white wires next to eachother in the Tacho Harness. One on the end of the top row and one next to it. (one is white with Black stripe and the other is Black with White Stripe)

I will let you know how I get on

[zoli88]

Gentlemen, thank you very much, I put them in last night and the wiring appears to be spot on. I have only run it up in test mode so far but it was recognising the revs so perfect....

Thanks for all your help