Installing ignition relay

If you don't have anything extra in the engine bay such as pumps, electric fans, in other words you are supplying a common ignition system and the VR, then what is there is larger enough, no 14 would be "overkill" for a stock type ignition.

The big issue here is the terminals in the bulkhead connector, the ignition switch connector, and often the switch itself. that whole path "adds up," a tenth here, 4 tenths there, etc.