Electric Fuel Pump Relays?

To the pump itself or the switching part of the relay. The pump should be the same gauge that is on the pump through a fused circuit and the relay can be 18GA for the switching side very little load on them.
To the pump itself or the switching part of the relay. The pump should be the same gauge that is on the pump through a fused circuit and the relay can be 18GA for the switching side very little load on them.

Thanks for your reply. The wires I have are all 16 gauge, which I thought were on the light side, except for the switching. the pump I have requires a 10 amp breaker, I thought 12 gauge for this. Thanks