One of the most annoying things about my FZ6 Fazer S2 is the way only the left side headlight comes on for dipped beam, despite there being a dual filament bulb in the right side headlight. I trawled around the forums and came across a chap in Canada who makes a wiring harness that fixes the problem. The forum in question is fz6-forum.com and the username of said genius is BD43. Now, if you drop him a line via the forum, and send him some ca$h via Paypal, he will send you a very professionally made harness in the post, with a sheet of instructions.

Basically, the Fazer already has the dual filament bulb and it has space on the back of the bulb connector for a wire to operate the low-beam filament. It also has the correct wire on running into one side of a connector in the frame and space on the opposite side of the connector for the wire from the bulb connector. So, basically, we are talking about plugging a wire into the bulb connector, running it around the fairing and through the frame, then connecting it to the factory installed low beam wire. Sounds simple enough.

Even though BD43’s instructions and photos are excellent, the connector is buried in the frame behind the battery, necessitating removal of battery, battery box and the air box in order to access it. The instructions I had didn’t really cover this step in detail, and it was pretty daunting to say the least. So, I thought I would explain the process here in the hope it might help others to overcome their fear of dismantling their pride and joy. Alas, there are no photos as I didn’t think to take any as I did it, but I think I can explain it clearly enough without. Just read carefully.

These instructions are for a 2008 model UK bike, but should be good for any FZ6 Fazer from 2006 on, and perhaps further back too.

Step 1 - Preparation
Prepare your tools. Having the right tools to do a job makes it sooooo much easier. You’ll need a couple of large-ish Philips Head screwdrivers, a pair of pliers, some hex keys / hex driver and a mini socket. I bought a tool kit from Halfords that had all this stuff in at reasonable quality for not very much money. Zip ties will be useful too.

Yamaha in their infinite wisdom provided no means of propping up the fuel tank, so you will need to figure out how to strap it up. I got a shoulder strap from a laptop bag and looped this around the pillion grab rail. I hooked a small bungee at each end on the holes at the front of the tank, and then connected the strap to the bungee with the hook clasp on the strap. Then you just adjust the strap to suit, remembering to protect the woefully thin paint finish with a rag of some sort. Don’t even start until you’ve figured out how to hold the tank up.

Step 2 - Removal of Cowling
On each side of the fairing, near the fuel tank, are two hex bolts. Remove all of these (4 total) taking care not to lose the plastic washers. Have a tray handy for all your bolts.

Once these bolts are removed, you can slide out the two black pieces of cowling on the top that wrap around the fuel tank. These slip straight out.

We also will want to remove the cowling around the clocks to make it easy to route our wire and access the bulb connector. There are four more hex bolts: one either side of the clocks, and one on each side near the top of the screen. These bolts are different to the others you removed, but keep them separate all the same.

You can now easily remove the cowling.

Step 3 - Lifting the Tank
Time to lift up the petrol tank! Remove the two hex bolts at the front of the fuel tank and carefully lift the tank up. It’s hinged at the back. There are two things to be careful of here: firstly, watch the lower edges of the tank where Yamaha’s woeful painting will have created a very thin layer of paint on a metal seam - if you’re not careful, the paint will flake off; secondly, don’t lift the tank up so far that you pull off the rubber fuel hoses at the back - that will be messy and potentially dangerous!

You will need to attach your strap now, and you may benefit from a second pair of hands. Make sure that whatever you use to hold up the tank is secure and won’t break.

Step 4 - Removing the Air Filter
Once you have lifted the tank, you will see a domed plastic box with foam padding on the top. This is the airbox, which contains the air filter and allows the engine to breathe. There are six black screws holding the top of the box on. Carefully unscrew these and put them safely on your tray.

Once the screws are removed, you can lift off the top of the air box. This needs a bit of pressure, but once you have it moving it will come off smoothly. The air filter should come away with the lid. Put this safely to one side.

Step 5 - Remove the Battery
The battery is in front of the air box. Let’s disconnect it.

Move the red positive terminal cover to one side and unscrew the terminal using a screw driver. Then do the same with the negative terminal on the other side. Take care with these screws not to let them fall down into the frame. Once removed, put them on the tray.

Now, you will see there are four bolts holding the battery cover and box in place. Remove the two frontmost bolts first - one on each side - using a socket driver. They are done up quite tightly. Again be careful not to lose these bolts in the frame. These two are different to the next two you will remove, so again, keep them separate and safe.

Now you can remove the back two bolts. As you stand facing the front of the bike, the right hand bolt will also be holding a bracket with a wire connector. You can leave these wires connected and the bracket will hang off them. Just remove the bolt. On the left hand side, if your bike is equipped with ABS, you will have a bracket holding the ABS fuse box.

Once these bolts are removed and safely stored, you can lift the top off of the battery box. Just push it out of the way - there’s no need to disconnect it as we can work around it.

Next, you can lift the battery out. This is probably heavier than you expect so use both hands to avoid dropping it.

Step 6 - Remove the Air Box
The two rear bolts on the battery box were also holding the air box in place, so this can now be removed. You will have to gently prise it up off the four metal engine air intakes. You won’t be able to move it far as there are hoses connected to it. These need to be removed.

On the right hand side of the box, is the first one. Squeeze the spring clip with your pliers and gently pull the air box backwards and slide the hose off the connector. On the back of the air box are three more hoses which need the same treatment, only this time, pull the box upwards instead of backwards. Lastly, remove the green sensor by gently pulling it out of the box.

Put the box somewhere safe and take care not to allow foreign objects to drop into the engine. There are butterfly valves which will be shut, stopping objects falling all the way down, but double check when you re-assemble the box.

Step 7 - Access the Connector
Now, pull the battery box up and back, and you will find a soft plastic sleeve covering a connector. Pull the sleeve back and un-clip the two halves of the connector. On the female side will be a green wire that has no corresponding pin on the male side. This is where you will connect one end of the harness. BD43’s harness has the correct connector to just clip straight in, but don’t do it yet.

Look at the front of the frame on the left hand side and you will see a hole with wires fed through. We want to run our wire through this hole.

Step 8 - Run the Wire
Pull the bulb connector off the right-hand headlight and snap up the plastic cover on the back. Insert the correct end of the harness into the available slot here. If you are making your own lead, make sure you solder on the correct metal connecting piece. Snap the cover back and plug the bulb connector back onto the headlight.

Now run the wire around the fairing to the left hand side. Use the existing clips on this side of the fairing to retain the wire, and use zip ties on the other side for a tidy install.

Feed the other end of the wire through the hole in the frame and click it into the correct slot on the male connector.

Reconnect the two halves of the connector and cover with the plastic sleeve again.

Step 9 - Re-connect it all!
Follow the steps in reverse. Push the battery box forward and down and slide the battery in. Reconnect the air box. This can be tricky. First of all, slide the rear hoses on part way (using your pliers on the spring clips - the hoses are lubricated so they will slide on easily), then slide the right hand hose on fully. Now line up the ports and press down firmly until the inner join between air box and engine is flush. This takes a bit of pressure from both sides. Finally, push the hoses on fully at the back and re-insert the green sensor.

Re-connect the earth (left side) terminal to the battery and then the red live connector. Put the lid back on and screw in the front two bolts. Then, taking care to re-install the brackets, screw in the back two bolts and check the battery box and air box are firmly seated and properly connected.

Slide the top of the air box back on, by lining up the air filter in the top with the grooves in the bottom. Screw in the six black screws and make sure it is shut tight.

Carefully remove your tank strap and drop the tank back down, then screw in the two hex bolts.

Now install the cowling around the clocks, using the four little hex bolts, making sure it is properly snapped into place.

Finally, slide the two side pieces of cowling back into place, and screw it all tight with the remaining four hex bolts, remembering the nylon washers.

THE JOB IS DONE!

Now you can turn on the engine and admire your twin headlights.

You may find that your right hand headlight is not properly levelled, and this may give some trouble come MOT time, but you can always slip the connector off the back of the headlight for the test, and re-install afterward.

Huge thanks go to fz6-forum.com and most of all to BD43. All comments, suggestions and modifications greatly appreciated - submit yours below.