Could be blown fuses, a blown relay, there may be a short in the circuit(s) somewhere... could be a number of reasons.
my wipers quit working, got a new wiper motor , it did not work either, found out that it has lost ground, attached a ground wire to engine and wiper motor and it worked.
There is a fuse for the gauges, check it.
Romeo - Wipers song - was created in 1981.
diagram of motor od 1981 corvette
50:1
this car in 1981 had a 4.4 litre which i think is a 267ci
10W40
yes
a Pontiac 301
yes.
1981
Try checking "Hemmings Motor News".