I need to make some alterations to the wiring of my HID kit. It is wired with 18 AWG cable. No-one over here really seems able to make any sense of that scale, so whats that in AMPS?

I had thought 17 AMP cable would be sufficient, but it is fitted with 25 AMP fuses. However the 25 AMP cable is alot thicker looking than the 18 AWG stuff.

Help!!