Outer Limits 4x4 Board

okay wondering if any one has done their own wiring headlight loom up grade. Thinking, of taking the hi and low of the h4 and via relays now. am away of negitive switching in system. so hi and low on all time, but i could use the earth to fire the relay as a relay is a coil and magente.

or am i better off tracking down the switch in the steering colum and changing it all to +ve switching.

Have searched topic, and most people say by a pre fab loom

bj