suggestions are appreciated

This is the correct thread. The only question I have is this. As my current wiring is, there is only one feed, that comes from the + side of the ampmeter, goes down to the kick panel and goes into a 30 amp breaker. Out of the 30 amp breaker, it ties into the harness on the back side of the connector. two wires go the the motor and the feed goes back to the switch. So, if I power the relays with this feed, where do I get the power to the switch to activate the relays? Can I run a secondary from the fuse box or hot side of the ignition with a 15 amp fuse?? I'm confused because I only have one feed and wra jrs diagram calls for two feeds?
Thanks

What I would do...

Run one 12 ga wire off the battery or starter relay stud if the wire from the battery to starter relay stud is sufficient. Place a 30 amp fuse in that run, maybe close to starter relay/battery. Run that wire back to the pump motor. Branch that to two inputs, distribution block or solder, for your relays (30).

Mount the relays right near the pump. Trunk access possible?

Use the existing wires yellow/brown to trigger the relays. Trim ends and put on correct ends for the relays/blocks/connector.

Have some real short runs from relays to pump.

This way you will have everything in the same proximity in case something goes wrong. Testing what's wrong will be easy if necessary.

The power for the existing switch is usually pulled from the amp gauge stud. If you put in relays, you could pull that power from a low amp fused portion of the fuse box. It will no longer carry the heavy current load so the heavy wire requirements at the switch no longer exist.