Hi I am new to this site but definitely not new to owning Cutlasses I have had this one since 93 right after I got out of High School and had 2 more prior to that one. My son and I just got through putting the 78 back together after sitting for a few years. We put in a rebuilt 350 out of a 69 in it and runs like a top, the problem is none of the gauges work now (this car has gauge cluster and round speedo not real common in these cars) and the alternator wont charge until you rev it up to about 2500-3000 rpm. The fasten belts and brake warning lights come on at start up. Sometimes the oil pressure gauge will work but thats it(also after you rev it but not all the time) also the blower fan it is not working either. Any ideas to what might be wrong. This is the third engine I have had in this car so I am pretty sure I have all the wiring ok under the hood although it has been with out an engine in it for a few years so I might of missed something but I doubt it.