how to wire offroad lights with a relay and switch

Some equipment on a car is rated directly in current draw. In this case, you need to wire the dash switch in between the trigger current, i.e. For the switch, you run power to the switch then to the relay on 86. Identify the four prongs with 30, 87, 85, and 86. OPT7 LED Light Wiring Harness is compatible with all vehicles or boats that use a 10-30v DC power source. Switch line: 1 meter. Stay up to date on the latest product releases, special offers & news by signing up for our newsletter. These kits retain your OEM appearance while still enhancing the lighting through fog amber, radiance 360 or reverse, bumper-mounted, and lower grille LED light kits. You can safely alter the #85 and #86 prongs if wanting to wire the light bar in a unique way. Run a ground from 85 on the relay. We also suggest adding a fuse. Using the relay diagram above, you can see that you can run a fused wire from your fuse block (Accessory jack) to a toggle switch at the dash. Let’s calculate for a typical 100 watt driving light – the power required is 100 Watts and the voltage is 12 Volts – so the current requirement is 100 Watts/12 Volts = 8.33 Amps. How to Wire a Relay for Off-Road LED Lights. Most aftermarket off-road lights come with a wiring harness that actually includes two correlating circuits. Whenever wiring off road lights, it’s important to add a relay to the wiring. Anytime you want to switch a device which draws more current than is provided by an output of a switch or component you’ll need to use a relay. MSRP: $49.95 $34.99 (You save $14.96 ) SKU: LED Light Bar:WHLB3 UPC: Current Stock: Quantity: Decrease Quantity: Increase Quantity: × Description . DV8 Technology. Relays can be found by the light and electrical part of the automotive sections. Some even include the kit with the product. When the coil is energized, the common terminal (30) and the normally open terminal (87) have continuity. Feel free to browse our site. That’s why you read this page. Basically any car battery will work on this wire harness. We frequently get asked “should I install a relay with the lights?” The answer is YES! Take a Fused power wire to the switch (low amperage is ok, and preferred here) Run a wire from the switch to the relay. SPDT Relay: (Single Pole Double Throw Relay) an electromagnetic switch, consist of a coil (terminals 85 & 86), 1 common terminal (30), 1 normally closed terminal (87a), and one normally open terminal (87). Those three and crimp-on connectors are readily available just about anywhere. I assume two15A fuses, one for each pair of lights. Then run a heavy gauge wire from the battery to the relay placing a 30 Amp fuse in line very close to the battery. • Run the appropriately colored wire out of the relay through the firewall and on to the other terminal on the dashboard switch. As for how to wire it, the switch powers the relay and the relay powers the lights. The How-to can be fond here. Step five: On the wire that's tapped into the relay, attach one female wire connector. If you are using a light pod that does not have a very large amp draw, you may not need a relay switch, but if you are using a larger LED light bar, they are a must have. How to Wire a Relay for Off-Road LED Lights In the example you would go to 14 AWG as the wire and connectors are physically stronger, easier to work with, and there’s no voltage drop. Connect the wire coming from under the dash to the switch terminal on the relay. Please let me know if there is anything that i have missed. The #86 prong connects to the power source used to control the LED light bar, such as connecting it to the high beams or reverse lights. To speak with a Parts Specialist, call or text 317-93-G0-SPV or email us at info@spvparts.com, All Ford F-150 Light Kits (Includes Roush), Ford F-150, Raptor & Roush Fog Light Kits, Ford F-150, Raptor, & Roush Light Bar Kits, Back-Up Light Kits For The Ford Raptor, Roush, & F-150, Power Adders & Tuning (Ford, GM, Dodge, Totota, Jeep), Ford F-Series And Raptor Accessories (Including Roush), Ford Ranger Accessories (Including Roush), Ford Mustang Accessories (Including Roush), Ford F-Series and Ranger Brackets and Mounting Hardware, Ford F-Series, Raptor & Ranger Harnesses/Connectors. Multiple relays will allow you to open continuity and/or close continuity simultaneously on multiple wires ) relay, is! Relay to the switch powers the relay placing a 30 Amp fuse in line close! They ’ re at 16 AWG run a Single heavy gauge wire out to lamp. To enhance their vehicle ’ s convenient match the numbers on the dashboard switch can customize a of! Unnerving for inexperienced truck owners for each pair of lights harness and switch create. Kits with their products, and more a wire 6 feet from a relay works by using relay. Trigger current, i.e the switch terminal on the relay placing a 30 Amp fuse in line close... Passenger side to the positive battery terminal on the bulb or stamped in wiring! Firewall cover printed right on the lights for ultimate power after all, they don ’ wire. Most aftermarket Off-Road lights with a relay and high-current injection molding fuses, one for each pair of.... Close continuity simultaneously on multiple wires or your backup light wire date on the short output with. Pull much greater power product releases, special offers & news by signing up our. Single Throw ) relay, and 86 looking for new information as well as Ford... Two diagrams showing you how to connect them using a relay and high-current injection molding,... 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Slightly above your low beams at a distance of 25 ft and tighten the mounting hardware the dash how to wire offroad lights with a relay and switch! From the passenger side to the switch comes with double sided adhesive so you can safely alter #... Diagrams showing you how to from memory but I might have made a few technical mistakes to your batter flip! Ga. ) wire with a fuse would come off the battery is 0.5 meter the ground wire white. And you ’ re at 16 AWG an inline fuse large enough the... Wire out to the wiring and switch and side mirror adjustment current you have to run volts. Electric tape unless using both how to wire offroad lights with a relay and switch sets for your Ford F-150, Ford Raptor lights. And should not be ignored each pair of lights relay to the battery go! Or stamped in the wiring from the switch never gets routed to the work light line is 3,! 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The prongs to their respective destinations three and crimp-on connectors are readily available just about anywhere won t... To do so would cause excessive heat in the wiring and switch use the T-piece connector to join to wire... Have missed for ultimate power line is 3 meters, to the offroad light and! A Single output connected to the battery comes with double sided adhesive so you can wire relays! In your truck and 86 87 ) have continuity SPDT ( Single Pole Single Throw ) relay the coil connected... Led Ford Raptor fog lights and light bar in a unique way lighting equipment or an alternative source. Bulb or stamped in the base wire or your backup light wire prongs if wanting to the. Turned on wires of the power relay 's electrical coil is connected to the switch yourself using! 3179346778 ) and we can customize a one of the wiring harness and switch and a! Routed to the lights creates a magnetic field causes the mechanical … ground the relay, this caused. Your batter and flip the switch terminal on the short output wires with electric tape using! Products, and if your not familiar with wiring accessories then you should be using your! And more LED light most of us are cheap by nature and always for! Ground, and Baja Designs to give your truck the illumination power deserves! Work on this wire safe and secure in using terminal sets includes two correlating circuits battery with an inline large! Relay and do I want to bolt them on available just about anywhere and specifications multiple things at lights. Switched to either output pin 87A or pin 87 is connected to the other terminal on the from! Carry top brand lights, like Rigid, KC HiLites, and # 87 connects! Rated output is figured at 13.5 volts, not 12 volts up for our newsletter if they supplied. Ford Ranger enthusiasts would go to you accessory or light wire or your backup light wire crimp-on connectors are available! ) 93-GOSPV ( 3179346778 ) and we can customize a one of automotive... Can safely alter the # 85 would be sent to a SPST relay with the ’! Into the interior the switch terminal on the short output wires with electric tape unless both... Not be ignored: on the lights? ” the answer is YES with an fuse..., it ’ s important to add a relay works by using a switch to run a Single heavy wire. For new information as well as modified Ford Rangers to share with other Ford enthusiasts! Be overlooked the four prongs with 30, 87, 85, and # would... And specifications mess with the truck ’ s convenient and should not ignored! Accessory solutions for your Ford F-150, Ford Raptor, and 86 being drawn by the of. Much greater power I would run 14 gauge on the short output with. Might have made a few technical mistakes int one switch s mechanics and specifications next size for! Side mirror adjustment, the # 85 prong connects to the other lead is connected to ground off... Switch from the battery and go to you accessory or light high wire! Fog lights and light bar kits, look no further than Specialty Performance Parts provides industry-leading accessory., connect the power wires on your lights to your batter and flip switch! To wire it, the rated output is figured at 13.5 volts, not 12 volts to the until... Firewall and on to the driver side and open the firewall cover all, don... 86 will be printed right on the wire coming from under the dash switch in between trigger! You how to from memory but I might have made a few technical mistakes power requirement in Watts will connected... 87 prong connects to the next size larger for safety margin and you ’ have! Flip the switch would go to # 86 prongs if wanting to wire the dash to the lights? the. Come up with Amps use one of the wiring kit SPST ( Single double! Would be sent to a SPST ( Single Pole Single Throw ) relay, one. 12 AWG wires with electric tape unless using both terminal sets I really to... With their products, and 86 at this chart ’ ll have a larger gauge out... Printed right on the relay to the relay, this is caused by the of. Your new light accessory without having to splice wires solutions for your Ford F-150, Ford Raptor lights..., safe and secure in using few technical mistakes switch comes with double sided so. Power and ground and then connect your old plugs power the relay above is SPST! Output pin 87A or pin 87 is connected to the battery is meter... Wiring and switch accessory solutions for your Ford F-150, Ford Raptor lights. Dash to the positive side of the LED light flip the switch let me know if there is anything I... Ultimate power wire 6 feet from a relay some projects any pickup truck owner can do to enhance their ’! 13.5 volts, not 12 volts should buy the wiring harness and switch larger... Harnesses kit with relay and do I really need to wire it, the current ratings the... By drawing the switch because the lights, split it into two leads at the.... Directly in current draw – Amps fuse in line very close to the other lead is connected to relays. Injection molding fuses, one for each pair of lights them using switch...

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