Here are those instructions I followed:
Ok, just a quick writeup after installing the alarm on my bike (Yammy FZR 2fiddy).
Overall, the alarm is a very VERY simple one... as i was expecting.
POSITIVES
-CHEAP!
-Better than nothing...
-Did i mention cheap?
NEGATIVE
-No backup battery for the siren
-Very VERY easy to disarm / get around; (trust me, i tested how long it took me to disarm it WITH fairings on. About 25 seconds.)
-Coloured wiring for me is a no-no, might replace all wires with black at a later date.
-Shock sensor is a little quirky.
INSTALLATION
The manual that comes in the box is bloody useless. It doesn't even have pinouts for the last 2 active (1 not used) wires. For everyones reference... Takagawa has posted THIS link. Please download it and print it out if your doing this yourself.
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Right, to start off with take the fairings off and unbolt your fuel tank. Try and find a nice small place to mount the main box (about 2 cigarette packs worth of space is more than enough); but don't stick it in yet.
Now get that wiring loom out of the box and start wiring. Ideally you should hide/disguise as much wiring as possible; so find the stock looms and then black electrical tape the extra wires along the existing looms.
Tape the socket of the main wiring loom to roughly where your planning on mounting the main unit. This will mean you can route all the wires where you need to and it won't be a spaghetti mess.
Run the 2 yellow wires to the closest (usually and in my case; rear) indicators. Then trace the cables back up about 15cm and you should find where you can detach them. Get one of the yellow wires and connect it into that socket. I opened up the crimped plug and then recrimped it with pliers. Reconnect the plug & socket and make sure theres a firm connection again. Do the same for the other side keeping the wiring as neat and hidden as possible.
Next up is the orange wire. You need to find something that gets 12v when the bike gets switched on. Ideally you'd go for the main ignition barrel but i was trying my hardest to stay away from it. I connected it up to the globe that illuminates my number plate at the back of the bike. You can also connect it to the brake light bulb (as long as you can't switch off the brake lights), or as i said, anything that gets 12v when the bike is switched on. This wire will trigger the alarm if the bike is switched on when its not disarmed (ie. if someone breaks your steering lock and starts it up).
The grey and pink wires are the Ignition wires (ie. immobiliser) and at this point in time i didn't connect them. I've lost my multimeter so i'll buy one during the week and wire them up properly next weekend. Anyway, to install this you need to figure out which wire is the one running to the starter switch (assuming not kickstart ) and snip it. You then connect the starter switch end to the grey wire, and the ignition barrel end to the pink wire. The alarm simply acts as a relay to close the starter switch circuit when you cut the wire.
Might as well connect the main unit now but don't stick it in place still.
Now for the power. The black wire with the O-ring mount and the black bare wire both get connected to the NEGATIVE terminal on the battery. The red wire goes directly to the POSITIVE terminal on the battery (although you can wire it to the ignition barrel).
Right, now for the LED & the screamer (siren).
Both just need to be plugged in and they'll work. At the moment i haven't installed the LED as i need to extend the wires... the length they give you implies your going to mount it somewhere at the front of the bike. I wanted mine out of the way and a b!tch to get to. For final installation try and have the LED flashing very clearly somewhere near either the instrument cluster or the ignition barrel.
The siren needs to be mounted somewhere bloody hard to get to and the wiring needs to be VERY hidden. As this is a simple alarm, if the siren is disconnected then thats it (other than the immobiliser). I mounted mine in a very tight spot 'somewhere' towards the front of the bike that is impossible to get to without removing the fuel tank and a front fairing. I suggest you do likewise. Next stealth the wires as best you possibly can; and if possible make the connection where existing connections are on the bike. Make the wiring stand out as little as possible.
Right, now all the wiring is done, stick the alarm unit in place and stick the siren into its final location. I'd recommend then getting a roll of black electrical tape / black (or silver) duct tape and going over the main unit to make sure it's firmly in place. Also tape up any loose wires to make sure its all stealthed and neat.
Now to test it all out.
1. Arm the alarm by pressing the big lock button at the top of the bike and check that all blinkers flash and that the alarm chirps once. The bike is now armed.
2. Get the key to your bike, put it in the ignition, block your ears.. and turn the key. The siren WILL sound (if you connected the orange wire), and the lights will flash once a second.
3. Quickly (else not to annoy the neighbours) disarm the alarm by pressing the middle 'unlock button'.
4. Re-arm the bike with the big lock button, wait 4 seconds for it to arm... then sit on your bike. Don't be dismayed if it doesnt go off the second you sit on it... you might just need to crank up the sensitivity. For me, if i carefully sit on the bike it won't go off, but it'll definitely go off it i sit it back on its side stand! If/when it goes off, disarm it again.
5. Arm it again and start knocking on your bike... start at the fuel tank... check the boot... check everything people might want to play with. Disarm as necessary.
When the alarm is triggered, if the knock sensor is triggered lightly (the first time) it will chirp 4 times and make the lights flash. If it is triggered again in the next 30 seconds it will set off the alarm properly. It will wail for about 30 sec or so then stop and rearm itself.
If anything doesn't go as i have said... check your wiring... and check it again. Failing that, its time to get tricky with a multimeter.
Cheers & a big thanks must go to Takagawa for organising the group buy and for the definitely bargain price. I must also say 'im sorry' to my neighbours for pissing them off whilst 'testing' the alarm.
I'll also be doing the install on Tenoq's GPX probably sometime within the next week or so... so i'll update with any info on that install aswell.
I didn't end up taking any photo's firstly cos my hands were greasy & dirty and i didnt want to play with my phone / camera.. and secondly, they won't really help you! You just need to pay attention to where the various coloured wires go and it's easy enough.