1989 Cheyenne 1500 Wiper Relay?

[3drburb]

After about 20 years of owning this truck and using it mainly for dump runs or to haul stuff in the Spring and Summer, I was driving it this week in the rain only to notice that my wipers do not have a low speed.

Is this normal?

Is there a common fix, and or what are you all using for an aftermarket intermittent wiper relay, if that will fix it?

I am thinking if it's not fixed soon, I will forget about it for a couple years.

Thanks in advance.