I replaced the two smaller black relays with four pole relays and they are working fine but I went over the wiring diagram and made sure that it would. Autozone and napa might carry the five pole relay iirc it's also common to Audi and is used both for a fuel pum and a window regulator but I don't know the number.
On my bike one was a load shed relay the other worked with the headlight blinkers and horn. I replaced them both and they went south on me again after about 1k miles that's when I went with the four pole and have had no issues since.
But before spending the money on relays make sure the wiring is in good shape. Before digging the harness open look to see if there is any thing indicating a problem. Like over heated connections. A short buried in the harness will often show itself at the plugs.
On vacation for a spell