dythama 10 Posted June 27, 2015 Hi, I'm new here but I could do with looking at a 89 wiring diagram or understanding ow the mpg, mph, miles works on the older mfa. Your help is appreciated Quote Share this post Link to post Share on other sites
davidwort 0 Posted June 27, 2015 (edited) mph and miles is direct drive cable into the cluster and mpg is calculated from manifold vacuum by a hose/pipe to the cluster oh and your first few posts are usually moderated so may take a while to appear Edited June 27, 2015 by davidwort Quote Share this post Link to post Share on other sites
dythama 10 Posted June 28, 2015 Thanks. Speedo is fine as is the vacuum connection to the cluster. It's the MFA that's stopped showing mpg, mph average, and miles of journey! Spoiler still rises at 50mph so speed signal must be good. Quote Share this post Link to post Share on other sites
