22awg is widely used in motorsport applications. General purpose it can carry up to 5 amps and it fit the most popular Autosport connectors, yet not too small for the DTM range of connectors.
Available in 10 colours. Sold by the metre.
If you are building a motorsport quailty harness this the wire to use. Light, flexible, lays up nicely due the ETFE polymer coating, this cable saves time.