I have a 1996 dodge neon 2 dr 5 speed. My gauge in my car is in Km/h and it does not have a RPM gauge, as far as i know as long as i have the grey wire with a line on it behind my cluster I can plug in a cluster with a RPM gauge no problem. Now here is my question I have been wanting to swap my No tach cluster for one with a tach but the only other ones that I can find are in MPH if i installed the one that is in MPH will i have to worry about the speedo being accurate or is it just a direct plug and play, all gauges will read properly?

Thanks

 

its all just plug and play.....mph or kmph make no difference.....and all neons are prewired for a tech...just throw in the gauge with one and your good to go

 

Speedo won't be off and it's plug and play. You can swap the odometer out to keep your milage correct also.