Re: Changing Instrument Cluster
You may or may not (depending on your loom) have to make changes to your wiring. Even if you do the only thing you will have to connect is one wire, which is tachometer signal which can be found next to the brake booster.
You will need to purchase and install the right oil pressure switch too so the gauge works properly.
If you would like the extra warning lamps (low washer fluid level and low coolant) you will need the relevant sensors for those too, though most people who do the dash conversion choose to remove globes behind the warning panel to avoid this.
Hope that helps and hope you understand...in a rush!