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What Gauge Wire For Headlights
What Gauge Wire For Headlights. Headlight switch to fuse block 12 or 10 gauge. So, use the right size wire.

14 awg should be a great plenty. The red wire leads from the battery, to a fuse, to one terminal on the switch. Wire gauge depends on current and length of the wire.
Auxiliary Driving Lights 14 Gauge.
At the same time instead of the 18 gauge wire via the switch being the feed wires, i will use 10 gauge or 12 gauge wire via the relays for the feeds to the dip and high beam. Again the thicker the wire the better. This wire only needs to be 16 gauge (it carries very little power) and it should be black.
There Is No Need To Go Any Larger.
The safe limit of an 18 gauge wire is about 15 amps. Horn to relay 14 gauge. Inverter, fridge, etc.) as you, you most likely need different wire gauge.
This Is How I've Done On Several Cars And I Haven't Had Any Issues.
12gauge for battery to relay (fused), relay to headlights and ground, trigger wire 14 or 16gauge. 14 gauge is used for most 6 volt low load circuits, such as lights. The red wire leads from the battery, to a fuse, to one terminal on the switch.
Chevy's Choice Was 18 Gauge.
The main power from the battery feeding the fuse and relays should be a nice large gauge wire as indicated. What is the white wire on fog lights? I'd try to find out where the voltage is being dropped, however.
Factory Wire Is Probably 18.
Run a new red 12 gauge feed wire over to your battery or to any other place (such as the starter solenoid connections) that gets full battery voltage. Then add in the years of corrosion at connections, wear at the light and dimmer switches and the amount of resistance in the circuit goes way up. For example, the fuel gauge goes from 3/4 down to almost 1/2 when i pull the headlight switch, some but not all other gauges do the same, drop down to a lower reading.
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