How a spotlight/lightbar relay works (Beginner's Guide) 

Brilliant explanation! Picking up a Cherokee xj and want to install spots. But always wondered the importance of relays. Your explanation was great!

Thank you for this very detailed instructional video. I just bought a secondhand Land Cruiser 200, the LED Spotlights (Kings) worked fine for the first couple of trips, but last night it wont come one with the high beams. Hopefully with this video, I might be able to trace the fault. Great work you put in.

Finally, someone that explains wiring spottiest in plain english, Top video, well done Mate.

Straight to the 👉 point

Beat explanation I have seen. Well done mate. Cheers.

Best vid. I’ve watched so far. Thanks for sharing the knowledge

Thanks for the refresh course, much appreciated.

Excellent. Clear and straight to the point. I will now take both of mine apart!! lol

At last someone who explanes how to Instructions in lamen terms. Very well done mate. Thank you 👍👏

Best video on this I've come across so far!! Well done mate!! And Thank You!

Thank you. This was one of the better videos I’ve found on this subject.

Just video Paul, made me understand it all a lot better!

This was so helpfull cleared up where I was going wrong thanks heaps cob

Excellent video, thank you for the explanation. I now need to find your light bar wiring video 😉👌.

Thanks, you explained it reall well!

Really good simple thanks

Great explanation and video thanks Paul

ah thanks for video. now i know why one wire didnt work. will fixed it soon hopefully it works! thanks champ

Good video really clear thank you ✌️

This is a great video mate

Thanks mate.

Great job thx

Good job mate. Keep it up. Got a power feed issue on mr triton. My bro piggy backed off existing light bar install. Worked for about 5 minutes, then cut out. I believed a fuse at first. Now possibly stuffed a relay, or rocker switch? Just that high beam still works. Now original light bar doesn’t work or new light bar

Hi. Very dumbed down explanation of how a relay works. I like it. I'm wanting to wire in a light bar to a mitsubishi asx. Factory high beam is rubbish. Previously I have purchased plug and play kits but it seams the connections are different to the kits. In the fuse box I have found the high beam fuse. Can I piggy back off this as the trigger wire? Cheers.

Well explained mate. Good video and info. 👍🇦🇺🍺❤️

Great thanks

Great video I have a question for you I am trying to hook up some work lights with a spotlight harness but don't want it on the high beam just inside the cab or even outside for setting up camp

Hi mate thanks for the video! I have only one question about High Beam signal..... Is it possible to get this signal from fuse box?? i mean it: Fuse box to switch and from switch to relay...Thanks and good luck ;)

Cheers for the vid mate… nice n easy to understand. How do I go about hooking up a override switch so I can flick my reverse camera on while I’m driving? Cheers

I've just wired spotlights(Hella 500 FF) to my FJ Cruiser as per Hella instructions to my high beams, however when i turn on the ignition the spots come on with the lights in off position and high beams turned off, if i flash the high beams they then turn off, not sure what i've done wrong

One thing that is not explained though (which I cannot seem to find on any tutorial video) is the switch part. I want my spots to run independently from my normal driving lights. So I want to add a switch to terminal 86 of the relay. But this will mean a wire running from the battery positive to the switch and back to terminal 86, correct? A switch will not do anything with just one wire running from it to terminal 86.

2:40 THIS! I just bought some aux lights for my car and want to wire them similarly to this. However, i want to be able to engage them even if the highbeam signal is not present. Basically; I want the car's highbeam to be the 'master switch' that will power the aux lights regarless of if the 'slave switch' (user operated switch in the dash) is in the on or off position.

Can I ask question, if I lost my spot lights while driving, where do I look to see if there a fuses or something busted? And or have the lights just died? They look cheap lights and only had car for 6 months.

How many lights can be powered from 87 say if you ram two wires from pin 87 to light bar and of course they would be grounded at the light end

Does one relay work 2 halogen spot lights? Do you just run 2 wires from the bottom post??

My LED Bar in my Kia has stopped working all of a sudden after working well. Have disconnected then reconnected but nothing. Could this be the relay? Battery is fine.

My ford courier got spotlights wired up on a switch and looks like it wired into the headlights bit just can't seem to get them to work

👍👍👍

Hi … i was driving with led lights on, and when i dimmed lights down from high beam, led lights never came back on, I’ve checked,, power to switch is there..check fuses, check head light connection, everything is all good … power is all good except two front led lights aren’t coming on

How would you wire camp lights on roof rack

hey mate how do connect theese to my reverse lights? is it safe to slice the reverse light and wire that to the high signal wire?

Dumb question. Since the relay has a ground wire does the relay itself need to be mounted to a ground. Curious as I’m trying to install on a atv

I installed a keyed relay to the switch, now the light bar only works when the key is turned on (no dead battery)

Thank you so fucking much you freaking angel!

Great explanation but I’m a bit confused as my ground for my relay is on 86 and my switch is 85

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The negative power is a little confusing ... as I think that's what I have on the rodeo the earth connection lights up on the test light ... and the low and high beam don't ... really confusing

Careful there .. most horn relays (most common thing used) are 25amp and the toggle may be a SPST, SPDT, DPST, DPDT and illuminated or not illuminated. I thought you'd get into the magnet throwing the connection. You could throw from the light source via a 1st step relay which is then remotely controlled by your accessories line though that's a lot of mess for fault finding. A relay uses like 0.1a or so (bugger all) but can handle a decent whack of power before you go into other heavier options. Alike the toggle switch it can also have double throw, normally on or off options and more depending on the relay you get for what scenario. If you wanted to be a smartass with reds and blues, you just need a timer circuit (half second on half second off for eg) to feed your control pin on the DT relay from the timer, hook your blue strobe to normally on and red strobe to normally off. You'd be wise to run obviously a second relay on the power in side to disable this. This would mean each half second a half second power pulse/output would switch to blue and then in off time switch to red. Don't do it, I know a mate asked me to setup similar for them years ago and got in crap for it but think of this as an example of a simple but more advanced relay circuit.

Why not put the switch on the ground connection? Seems like easier wiring.

I wish I knew this when I was 17.... My air horns and spotties slowly ruined my cars.

I have a Mooney for that stuff lol

If that was for beginners you lost me when spongebob square pants lost his arm and became a doorbell

In Victoria, the rules states that any light bar or spotties added, must turn off when high beams are turned off (doesn't say anything about switches) I've got mine set up only to trigger when the high beams are triggered without a switch to keep it seperate (sometimes can be confusing lol) Havent had any issues, and if I was pulled over, I would show the police that statement from Vicroads. Great video by the way :)

Could you make it a bit more complicated😂.