i actually did this a few weeks ago. there are two wires that connect to the light capsule thing. THe black wire you need to ground it on anything metalic. I simply found a screw underneath the dash, loosened it and tightented it with the wire there. THe other light (trickiest light to hook up) needs to be spliced into one fo the brown power lights which turn on when you turn on the lights at nighttime. This can be wired either into the brown light dimmer switch behind the dash or a fuse which goes live when you turn on the lights. The third possiblitity for the light wire is behind the central console for those lights which are on at nights on the a/c. THe red/white wire which you mentioned as having found is the tachometer wire which goes to the coil. THis you simply connect to the tachometer wire, which is found dangling loose behind the dash. THe last wire is the power wire for the tachometer which must be spliced into the fuse box. THere are terminals for this in the fuse box and typically 11 and 12 are goood choices for this.


IF you have any other questions please ask.


btw...if you bought an old tachometer/used, then the light is probably burned out....i'd look for a new one if so:)