Wiring in new gauges
 

Can anyone point me to info about wiring in new gauges for my 66 GMC. I have a set of Autometer gauges coming and trying to figure out how to wire them in. I will be replacing the stock three gauge GMC set (Temp, Speedo, Fuel). Need to know what I need to tap into cluster wiring to make these things work. My truck has a newer 350 sbc with internally regulated alternator.

Thanks for the help.... :gmc2: