ok so im working down the list pf issue's that keep poping up with the new regal, and i gotta get the speedo cable fixed, how hard is this to do ? ive never done one before and how much does a new cable cost ? i know the basic idea how it hooks up to the transmission and bolted to a few things to hold the cable, and of course through the firewall and into the cluster, but if there anything more to it? or is it basically just " plug n play" type job.