Hi,
To get more light up the mountain track where I live I have fitted ultra bulbs plus fitting an led light bar (plus putting LHD headlights in as now in France).
Anyway, bar fitted, wires pled through, relay in and switch in. I have 3 wires left..... earth from the switch... easy. Live from the switch and thick live from the relay.... where should I connect these 2?

Thick one will reach the fuse box under the dash, thin one is a few ft long.

Advice??? I bought a fog light relay loom as easier than building one.

Many thanks.

Pete