I'm guessing you have a Series IV as earlier cars had a mechanical rev counter, so it did not matter. I would say you need a rev counter from a Ser V as these were neg earth, if I remember correctly from another thread that our well informed member 'pruyter' advised on. I guess a + earth rev counter could be changed, but may not be cost effective? I'm sure there will be other more knowledgeable responses too! Cheers. G.
Hi there, Just looking into converting the Rapier to negative earth so I can fit an alternator. The rev counter says positive earth only, what do I need to do to allow me to switch it? I have switched it on a car before but it wasnt as advanced as the Rapier!