TRIUMPH ROCKET 3 PAGE - on this page: H4 Kit, PC-8 Kit, Heated Grip Kit

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.



- 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 Relay Kit for Rocket III $88.95

Main Leads Connection

H4 Dual Headlight Weatherproof Relay Kit w/Lo Cut

This Kit is the same Kit as above but with the addition of LO beam Cut switching wires. This feature allows the headlight to be off during startup. A SPST switch is needed. See my Switches Page here.

Shown above with Fusepanel Main Leads Option (no fuseholder)

This Kit switches the LO beam relay so there is no loss of light output.

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.

If you want to use my Barswitch with this Kit, choose ‘Bullet Connectors’ as the switch connectors.

H4 Dual Relay Kit for Rocket III w/Lo Cut $95.95

Switch Connectors
Main Leads Connection

For Rocket III Touring with single bulb:

Go to the H4 Page here and order the H4 Single ‘In Shell’ Headight Relay Kit.

You can also order the LO Beam Cut option for that Kit on the same page.


PC-8  Fusepanel and custom Relay Kit for Rocket 3

This Kit has a plug and play switching connector using the GPS/Aux Power Connector.

Read general info and specs of the PC-8, and it’s features here.

Read all about the Powerlink  System and it’s features here.

Please note that this kit and all our PC-8 Kits are now 50A capable using dual main fuseholders.


PC-8 with Relay Kit for Rocket 3 $109.95

Connection Option

It is convenient to mount the PC-8 with Dual Lock. You can buy some on the PC-8 Page.

Relay Kit Only for Rocket 3 $49.95

Connection Option

NEW! - The Powerlink Connection option is the same Kit with with short battery leads and a connector to plug into the Powerlink Battery Leads, making the overall total Kit the same length. Buy the correct Powerlink Battery Leads for this Kit below:

Powerlink Battery Leads for Rocket 3 $16.95


NOTE: The PL battery leads for the Rocket 3 are different than the kit above, with NEG lead longer. This pic to show the unit only.


Triumph Heated Grips Relay Kit

This Kit plugs into the stock connector and provides switched power and ground for your heated grips. Please read the notes at the bottom carefully before buying this Kit. I have been told that the 2014 triumph Explorer XC does not fit this Kit. The heated grip connector should be a 3 pin connector to fit the one shown below.

triumph hgk

Triumph Heated Grips Relay Kit $29.95


The connector used for this Kit is an Amp Econo-Seal Male 3P, also available separately here.

New Triumphs with the female connector shown below for heated grips will work with this Kit.



- The connector plugs into the heated grip connector on the bike. You may have to remove the dummy connector first.

- The posilocks supply your heated grips main power and ground inputs, red is POS, blue is NEG.


PLEASE NOTE: It has come to light that some Triumphs were wired incorrectly, with reversed postions of the hot leads in the bike’s heated grip connector. You might have to swap the hot terminals in the Eco-S connector. First, check your battery draw when bike is off. It should be 100-150 MilliAmps if you have an onboard clock. If you have a security system, that will also draw some power. The idea here is to note any increase in battery current draw after plugging in this Kit to the bike. Pull the fuse on the security system to make it easier to check any unwanted battery draw.

Battery Drain Test:

First you need a VOM. Plug in the leads so that it will measure HIGH Amps. That should be 10A or more. Set the VOM to the HIGH Amp setting but don’t turn it on yet. Now, disconnect your NEG battery terminal(s) and move them away from the battery post enough that they don’t touch the post. Connect the black VOM lead to the battery post and red lead to the terminal(s) you just removed. Make sure the NEG terminals don’t touch the battery NEG post. If there’s more than one terminal you can use the battery post screw and nut to combine them. You will be measuring all current between the post and NEG terminals.

Now turn on the VOM. You will see whatever battery current drain on the display, that is normal for your bike. Record this setting so you don’t forget. Simply put, measure and record your bike’s normal battery current draw.

Now plug in the Kit and note and record any significant increase. If you haven’t installed any heated grips yet, just make sure the Kit’s output leads aren’t touching any live wires. There should be no additional current draw if the Kit is correctly pin matched in the connector. If there is an increase of more than 10 MilliAmps, and when you unplug the Kit the battery goes back to normal current drain, then you will need to swap the pins as outlined below.

And of course after swapping the pins in the Kit’s connector, you should recheck the battery drain to be sure that there is no additional drain from the Kit. Once you are sure of correct pin configuration you should complete the instal of the heated grips and recheck battery drain.

Here’s how to swap the terminals (purple and blue wires in 3P connector)

What you’ll be doing is leaving the black wire in place and pulling out the blue and purple(red) wire terminals, then swap their positions and reinsert. Note orientation when removing and reinsert the same way. The seals will remain in place.

1 - remove the yellow retainer with a small flat blade driver - pry using the slots, it will pop loose - remove it

2 - insert the blade next to the terminal of the blue wire (on open side) and pry away from terminal while pulling the wire enough to release the terminal back out of the housing - there is a small plastic tab in there you need to pry back, be gentle

3 - do both blue and purple wires, then reinsert blue where purple was, and purple where blue was

4 - push back in the yellow retainer - it will only fit one way - then push it in until it clicks into place with needle nose pliers etc.

Additional Notes:

I have configured this Kit so that I think it will work on most Triumphs. Very few should have to swap pins. I’m sorry but there’s no way for me to know for sure which years and models are configured differently. It seems that the factory wired some bikes differently by mistake. But at this time I’m sorry to say that you MUST TEST your bike to be sure, or your battery might lose its charge over time when the bike is not being used regularly.

Also, those who have purchased this Kit previously should do the battery drain test to ensure their Kit is setup right. If you ride regularly you might not notice the small battery drain when the Kit is configured incorrectly. This battery drain test is good to know how to do for future diagnosis so take the time to learn and do it right.