Fan Relay Pigtail Wiring? 10 Gauge Power Wire, or?

Using the usual 30 amp Bosch relays for wiring up the dual LS1 fans. The relay plug-in/pigtail wiring calls for a 10 ga. main power supply wire for each fan. Correct? What is everyone doing, replacing that one wire in the plug-in, or just using the wimpy wires that come on all these cheesy relay plugs? lol thanks

Use 10 ga on the fan feeds and the 12v+ and ground inputs to the relays.

O.K. Thanks... So everyone is removing the smaller wires that come on the female relay plugs/pigtail harnesses, and replacing them with the larger 10 gauge wires? Thanks