I have a 87 El Camino with a 305. When I got the truck the cruise control worked ok. Went on a 200 mile trip and I had no issues with the cruise at all. I went on a short trip and it stopped working. Also the intermittent wipers stopped working. (The regular wipers are ok) I changed the turn signal arm with the wiper and cruise controls. The wipers and cruise still don’t work. I checked under the hood to see if there are any loose wires etc. Can’t find anything wrong.