How to wire aux lights fog lights led lights light bar or anything else to a switched circuit in your vehicle the right way.
Wiring auxiliary lights with relay.
Off road light installation installing off road lights can be a simple straightforward task as long as you closely follow the instructions.
With our wiring harness all you need to do is cut the wire coming from the switch to the 30 prong on the relay and wire it to your high beam lead or your backup light wire.
This is a general installation guide on how to wire a relay harness and switch kit.
If not with.
Wiring fog lights direct to battery auxiliary without relay 12v light diagram tuli into my truck ford automotive for universal high how wire aftermarket with beams on driving harness independent of headlights.
For anything above 30w we recommend installing a relay.
He also has a remote switch so he can turn the lights off for starting during daylight hours or just because but the relay is a nice failsafe.
These instructions apply to any car but for the sake of this guide we will be using the ford f 250 as a reference car to wire an led light bar.
Kawell universal 2 lead led light bar wiring harness kit with fuse relay on off switch for led offroad driving light led lamp fog light work light 12v 40a waterproof 4 4 out of 5 stars 615 10 88 10.
Dzg universal led light wiring harness kit 12v with relay 30a fuse on off switch for motorcycle driving lights auxiliary work lamps 2 leads 4 3 out of 5 stars 111 17 99 17.
How to wire your light using a relay the relay will have 4 points on it marked 30 87 85 and 86.
Even though the process may seem as easy as 1 2 3 it s important to pay attention to the specific gauge or amperage numbers determined for your specific vehicle and electrical load.
That way when you do have your high beams on the current from that goes to the dash switch first and if that is off the electricity can t get to the 85 86 circuit to.
I used a digital volt and ohm meter dvom to find a circuit that was switched.
The method i use for wiring the lights and other external accessories for the most part follows the diagram pictured above.
As in the diagram a wire is run from a 12 volt power source to the switch in the cab and out to the relay placing a fuse at the source of the power.
To wire this relay properly of course we were on the hunt for some switched power.