Hello everyone, my name is Sam and I'm the proud new owner of a '65 Impala Sport Sedan. As my username suggests, the car originally wore Mist Blue paint, but it's currently a mix of blue and several colors of primer from a full repaint and the previous owner's attempt at two-tone. Since most of the idiot lights on the gauge cluster (LH side) of the dash are dead, I'd like to switch the whole assembly out for an SS cluster with real gauges instead of idiot lights. I know I have to at least replace the wiring to the cluster (under-dash extension), but do I have to replace the rest of the under-dash harness? I know have to replace the temp sending unit in the intake and tie it back into the factory harness since the po cut it off to install an aftermarket gauge. I'm just not sure on how much rewiring I have to do to make this switch. Thanks in advance for your help!