H4 Single Headlight Relay Kits
H4 Single ‘In Shell’ Kit
This Kit is has short bulb leads for fitting the relays inside a headlight shell.
Specifications:
Main leads 61” (155 cm) AWG 14 (2 sqmm) high temp cross linked Yazaki wire covered with high temp sheathing
Bulb leads 6” (15 cm) - for installing the relays inside a headlight shell
Two heavy duty 20A Panasonic Relays socketed into the wiring
Cooper-Bussman ATM Fuseholder with two 15A fuses is removable with a bullet connector to make running wires easy
Includes cable ties to secure your Kit to your bike
Fusepanel Connection option - main lead wires are longer and sheathed to 6 in (15 cm) from ends.
Choice of H4 Coupler or a Sealed Posilock option for relay triggering - see H4 Coupler Connection above.
3 Circuit Solution option has a main lead connector to plug into my 3CS-HD.
H4 Single ‘In Fairing’ Kit
This Kit is has longer bulb leads for fitting the relays remotely in a fairing, where there is no regular headlight shell.
Specifications:
Main leads 61” (155 cm)
Bulb leads 16” (40 cm) - allows the relays to be remotely mounted from the headlight
Two heavy duty 20A Panasonic Relays socketed into the wiring
H4 Coupler makes installation easy by plugging into your stock headlight socket for relay triggering
Cooper-Bussman ATM Fuseholder with two 15A fuses is removable with a bullet connector to make running wires easy
Includes cable ties to secure your Kit to your bike
Fusepanel Connection option - main lead wires are longer and sheathed to 6 in (15 cm) from ends.
Choice of H4 Coupler or a Sealed Posilock option for relay triggering - see H4 Coupler Connection above.
3 Circuit Solution option has a main lead connector to plug into my 3CS-HD.
H4 Single ‘In Fairing’ Relay Kit $66.95
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LO Cut Integrated into this Kit (must buy both at same time) $9.95
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H4 Single with Driving Lights Lead
This Kit is an H4 Single ‘In Shell’ Headlight Relay Kit with an extra lead for powering ‘Driving Lights’ as found on Harleys and other cruisers. Relays go inside the headlight shell. The extra lead plugs into the toggle switch to power the driving lights.
Fusepanel Connection option - main lead wires are longer and sheathed to 6 in (15 cm) from ends.
Choice of H4 Coupler or a Sealed Posilock option for relay triggering - see H4 Coupler Connection above.
3 Circuit Solution option has a main lead connector to plug into my 3CS-HD.
H4 Single Relay Kit with Driving Lights on with LO Beam $68.95
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H4 Single Relay Kit with Driving Lights on with HI Beam $68.95
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LO Cut Integrated into this Kit (must buy both at same time) $9.95
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H4 Single Headlight Weatherproof Relay Kit
This Kit is specially for bikes like the BMW R1100GS which has a tight fitting headlight housing cover. Also, this Kit is for bikes with a very small headlight shell. This Kit allows easy insertion of the bulb leads into the headlight shell. The Kit is shipped with bulb leads out of the socket and they are then plugged in after installing the wires into the headlight housing. The relays can be mounted further back, either in the fairing or under the front of the fuel tank. The relays are shrink wrapped to keep out dirt and moisture.
Specifications:
Main leads 57” (145 cm)
Bulb leads 20” (50 cm)
Posi-Locks included with shrinktube for HI/LO connection instead of H4 Coupler
Fusepanel Connection option - main lead wires are longer and sheathed to 6 in (15 cm) from ends.
3 Circuit Solution option has a main lead connector to plug into my 3CS-HD.
H4 Single Weatherproof Relay Kit $69.95
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LO Cut Integrated into this Kit (must buy both at same time) $9.95
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H4 Single Positive Ground Headlight Relay Kit
This Kit is specially for older British and other makes which have a positive ground electrical system. This Kit is basically the same as the regular H4 Single ‘In Shell’ Kit, except the wire colours are reversed with red wiring for the ground circuits. It is designed to connect directly to the battery.
H4 Single Positive Ground Relay Kit $64.95
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LO Cut Integrated into this Kit (must buy both at same time) $9.95
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H4 Dual Headlight Relay Kit
This Kit is for bikes with dual fairing mounted H4 headlights. See here for bikes with dual headlight shells.
Fusepanel Connection option - main lead wires are longer and sheathed to 6 in (15 cm) from ends.
Choice of H4 Coupler or a Sealed Posilock option for relay triggering - see H4 Coupler Connection above.
3 Circuit Solution HD option has a main lead connector to plug into my 3CS-HD.
Triumph Rocket III Owners - I now have a special H4 Dual Kit for your bike, look here. Note, some Rocket III bikes have an H4 Single headlight and can use my H4 Single In Shell Headlight Kit at the top of this page.
Bikes with Twin Headlight shells with H4 bulbs can use the Rocket III Kit.
H4 Dual Headlight Relay Kit with LO Beam On/Off Switching
This Kit is specially for those who want the ability to cut their headlight at startup, or for any other reason (low battery etc).
This Kit will switch the LO beam of BOTH headlights using a SPST switch.
See my Switches Page for a switch for this Kit.
Choose a Kit with switching connectors according to the switch you will use. If you want to mate with the Handlebar Switch, choose the Bullet Connectors Kit. 1/4 inch pushons will connect to many switches that have 1/4” tabs.
Switching takes place on the low current LO beam relay trigger wire, not on the headlight bulb wires, thereby giving you full power to both headlights when ON, without any Voltage drop inherent in in-line bulb lead switching.
Fusepanel Connection option - main lead wires are longer and sheathed to 6 in (15 cm) from ends.
Choice of H4 Coupler or a Sealed Posilock option for relay triggering - see H4 Coupler Connection above.
3 Circuit Solution option has a main lead connector to plug into my 3CS-HD.
H4 Dual Relay Kit with LO Beam ON/OFF Switching (1/4” pushons) $87.95
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H4 Dual Relay Kit with LO Beam ON/OFF Switching (bullet connectors) $87.95
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Note, bullet connection has shorter switching wires because of wiring on the barswitch, to avoid excessive wire length. This Kit assumes you will use my Handlebar Switch or equivalent with 4mm bullets.
H4 Dual Headlight Relay Kit with One Headlight Cut Adapter Built in
Same H4 Dual Kit but with built in wiring for a Headlight Cut Switch (DPST). H4 Headlight cut adapters only are available separately here.
This Kit cuts both beams of one H4 Socket, in fact the one with the shorter leads. If you want to cut the right headlight, bring in the Kit’s main wiring from the right side. To cut the left headlight, bring in the main wiring from the left side.
You can buy a DPST switch for this Kit here (Toggle) or here (Rocker).
PLEASE NOTE - YOU CAN’T USE THE SPST ON/OFF BARSWITCH WITH THIS KIT.
Fusepanel Connection option - main lead wires are longer and sheathed to 6 in (15 cm) from ends.
Choice of H4 Coupler or a Sealed Posilock option for relay triggering - see H4 Coupler Connection above.
3 Circuit Solution option has a main lead connector to plug into my 3CS-HD.
The kit above has the H4 Coupler option and Fuse Panel main leads (bare wires)
H4 Dual Relay Kit w/ One Headlight Cut Wiring $91.95
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H4 Dual Headlight Weatherproof Relay Kit - Install Page Here.
This Kit is made specially for those bikes like the Triumph Rocket III, which have two separate headlight shells. Also great for custom bikes with twin billet headlight shells.
Features:
- both bulb leads longer (puts relays under front of gas tank)
- H4 Sockets left off for easier shell insertion
- relays shrink wrapped (keeps moisture out of wiring)
- relays slightly farther apart (easier to mount relays)
- Posi-Locks instead of H4 Coupler (no bulky Socket/Coupler)
Fusepanel Connection option - main lead wires are longer and sheathed to 6 in (15 cm) from ends.
The 3CS Connection option has a main lead connector to plug into my 3 Circuit Solution HD.
NOTE: This Kit is also great for other bikes with two separate H4 headlight shells: Street Triple, etc.
H4 Dual Weatherproof Relay Kit $88.95
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H4 Lo or Hi Beam Cut Adapters - Cuts one beam on one headlight.
Specially for the VStrom but will work on any H4 System, this adaptor allows you to turn off and on one headlight using any switch taking push on blade terminals. It’s available with push on spades, bullet connectors or Posi-Locks.
This Kit will work with one of my H4 Headlight Relay Kits or with a stock H4 system.
Works on HI or LO beam (depending on model), saves 55 (60 for HI beam) watts of power for your other accessories.
Now you can run a pair of Auxiliary Lights and get that triangulation that you need to be noticed by cars.
All high temperature 100o wire, with high temperature AH-6 sheathing.
Sumitube shrinktube on all terminal crimps to seal out moisture and give excellent strain relief.
H4 Socket plugs onto your one headlight bulb.
Your existing headlight socket plugs onto he H4 Coupler.
36” (92 cm) of wire is enough to reach to the fairing inner panel or to a handlebar switch.
Choice of switch connectors, push on female spades (.250” or .187”), bullet connectors, or Posi-Locks.
Order a switch to go with the adaptor here. I recommend a switch of at least 10A capacity.
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H4 Lo Beam Cut Adapter $39.95
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H4 Hi Beam Cut Adapter $39.95
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H4 Lo or Hi Beam Cut Adapter with Handlebar Switch
H4 Lo or Hi Beam cut adapter with bullet connectors, in combination with a handlebar switch.
Complete unit, just plug the headlight end between one bulb and its socket, attach the switch to your bars, run and cable tie the wires and you’re all set. Includes cable ties.
Handlebar switch is available separately on the Switches Page.
NOTE: A customer has informed me that on his VStrom 650, this switch won’t fit on the left side due to the bent clutch lever. However it will fit on the right side of the bars.
H4 Lo or Hi Beam Cut Adapter with Barswitch $54.95
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Handlebar switch mounted on DL1000. The mirror had to be moved about 3/16”.
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H4 Headlight Cut Adapter - Cuts both beams on one headlight.
Works on any H4 System, this adaptor basically disables or enables one of your headlight bulbs at the flick of a switch.
Works on both beams of one bulb, saves 55-60 watts of power for your other accessories.
Now you can run a pair of Auxiliary Lights and get that triangulation that you need to be noticed by cars.
All high temperature wire, with high temperature sheathing.
Sumitube shrinktube on all terminal crimps to seal out moisture and give excellent strain relief.
H4 Socket plugs onto one of your headlight bulbs. Can be used with or without my H4 Dual Relay Kit.
The removed headlight socket then plugs onto the H4 Coupler.
36” (92 cm) of wire is enough to reach to the fairing inner panel or to a handlebar switch.
You will need a DPST switch for this adaptor. See here (toggle) or here (rocker) for a switch for this adaptor.
Or you can use it with two SPST switches to control each headlight’s beam separately.
H4 Headlight Cut Adaptor $48.95
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Why not pick up a few extra Posi-Locks and Posi-Taps with your Kit? Great for all wiring, even around the house!
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