**** THIS IS A WORK IN PROGRESS, THIS NOTICE WILL BE REMOVED WHEN PROJECT IS COMPLETE ****


Introduction

This guide outlines how to replace your factory speedometer, tachometer (if you are lucky enough to have one) and dummy lights with a Trail Tech Vapor digital gauge/computer. These units are tiny (smaller than most slab smartphones) and bad ass; visit the Trail Tech website for a list of all the cool features these things support.

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The Vapor unit itself does not have any support for your traditional dummy lights. Trail Tech does however sell a "dashboard" accessory that snaps over over the main computer unit which provides 4 customizable lights. This means that for most of you, you wont have to loose your neutral, oil pressure, high beam, and turn signals indicators.

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For those of you like me with a 6th gear an OD light, you have a decision to make. I personally would rather have an OD indicator than a turn signal indicator.I am actually going to replace my turn signal indicators with a buzzer. Here is a link to a really simple circuit that I plan on using as a guide. It has the nice feature of killing the buzzer when your break light is on so that the buzzer does not drive you nuts while you are waiting at a red light.

Trail Tech sells the vapor as "kits" that have different sensor combinations to fit with different style bikes. The main difference between kits is the speedometer sensor that is packaged with it. I ordered the kit designed for drum breaks. Another difference between the kits is the temperature sensor that is bundled with it. Some kits have an oil temp sensor, others have a radiator/coolant temp sensor. The sensor that came with my kit has a ring terminal that is designed to replace a spark plug crush washer.

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Below are the part numbers for the kit I ordered.

TT-752-702 Trail Tech Vapor Computer Kit - Stealth
TT-022-PDA Trail Tech Vector Indicator Dashboard

I ordered mine from Phat Performance Parts. They were about 10-20 dollars cheaper than all the other sites and they system allowed me to pick the models directly with out going though some stupid "pick your make and model" bullshit.

Installation

Mounting Computer

The kit comes with a handlebar clams that allow for custom viewing angles. The mounting threads on the back of the unit are M4 and are spaced 40mm apart.

Power/Wiring

Speedometer/Indicator Harness Wire Colors

• Neutral <- Lg/R
• Oil Pressure <- Bu/R
• High Beam <- Bu/R
• Over Drive <- G/O
• 12V Power <- Br/W
• Ground 1 <- G
• Ground 2 <- Bl

• L Turn Signal ? <- O
• R Turn Signal ? <- Lb

Tachometer Sensor

Speedometer Sensor

Engine Temperature Sensor

Setting Odometer (Undocumented Feature)

1. Press and hold all three buttons down for three seconds to enter the data setting mode. Once there using the mode button progress to the tire size.
2. At the tire size enter 9110 using the left and right had buttons to increment the digits. Immediately after entering the new tire size press and hold the right hand button down for three second.
3. This should move to a screen with ( 12HR ) flashing on it. If this is displayed you are in the permanent data set so any alterations will be saved to the permanent information.
4. Once in this data set again using the mode button move to desired screen in this case the screen that reads ODO for odometer.
5. Finally using the left and right buttons again alter the ODO to desired mileage.

Once complete you can either wait for five seconds and let the Vapor revert back to the main screen or you can use the mode button to reach the main screen.

Note: Resetting the proper tire size is not needed since the Vapor with automatically default back to the values you had set prior to this adjustment.

The best way to get close to the correct speed (TIRE SIZE) is Find the circumference of front wheel by measuring its diameter in millimeters. Multiply the Wheel Diameter by 3.14. The result is your wheel size. I actually measured it in inches and converted that to mm then multiplied by 3.14. And if that still hard you can measure from the center to the outside then multiply that by 2 (convert to mm if needed) then multiply that by 3.14. When I did it this way I was dead on every time. Set it and forget it.

1 Inch = 25.4 Millimeters (Example only 22.33 inches X 25.4 = 567.182 X 3.14 = 1781)
3.14 is the multiplier for radius BTW.

9110 = 114 inch wheel?

Ok I finally understand that that 9110 is for setting the odometer to the correct milage of your bike. Kinda wierd but i guess it works that way.

i was just starting a project to put a similar gauge, that was a bit short on indicator lights

have you ever thought to use the buzzer for oil pressure warning instead? it'd buzz before the bike is started, but that's about the only downside..

or you could wire the 6th gear and neutral switch together (i think it's as simple as joining them at the switch), that way your N light will come on both in neutral or overdrive.. you'd just have to remember not to park it in 6th so you dont get confused

i mention this because our local laws require a visual (not audiable) signal indicator, it might not be the law where you are, but the bike might travel

Hmm, didnt think about oil pressure for buzzer but that would be simple also. Even before I bought the new computer I wanted an audible turn signal "reminder" Im always forgetting to turn it off. Good point about the the law regarding turn signal indicators, though I suppose the lights them selves don't count, I can clearly seem them from my seat. According to http://www.americanmotorcyclist.com/Rig ... -Laws.aspx I don't see anything about required dummy lights.

I have my trailtech installed just using the plactic 7/8 bar clamp. I used a one indicator for both turn signals, an oil pressure, hi-beam, and the nuetral indicators.
The oem connector for mine was seperated by sides. It used green/red on one side and a black on the other. On the turn signals I had to separate the two because the common is hot and the turn signal switch (light blue and orange wires) is a ground interupt on them and the rest of my indicators used a ground. I dont know how to explain that correctly so i will draw a schematic when I have time. To use a single indicator for both turn signal you will need two diodes (without them you will have emergency flashers). On mine the indicators have a light blue and an orange wire. I put the diodes with band on the outgoiong side. Then tie both diodes to your dashboard turn signal indicator wire.

I hope this made some kind of sense. Anybody know what wire I should use for the tach? Should just splice into the magnetic pickup wire right?

Edit found my answer.
These are the options for tach.

I spliced the positive tach wire the green (or yellow) wire that comes out of the CDI into the coil. I spliced the tach ground wire into the ground wire that attached into the frame right near the CDI. It seems to be working perfect.

Thanks Ryan thats what I'll do. I like the way it looks on this bike. Its way cleaner looking than the original dash/gauges.

I agree, the old gauges are so bulky, I've had them off for a few weeks now and I get grossed out now when I see a picture of a stock bike

I plan on making a new plate that will replace the plate that the ignition switch attaches to and then mount the TrailTech flush to the new plate. That will make it tucked away behind the headlight and will be angled perfectly to read.

I hope this diagram explains what I meant by having to use diodes and seperate the green wire in order to use the single indicator for both turn signals.

I actually had to modify the harness to get it to work with my setup. The dashboard harness has 6 wires, 2 positives are paired with a common ground. But with my setup, oil pressure, neutral and overdrive all share a common positive, and the grounds are unique. The high beam is on its own little circuit.

So here is the original harness:



I cut one of the green ground wires at the crimp (since its longer than the black ground wire) and soldered it to the black ground wire.



Now I have 3 bulbs that share a common positive and the highbeam light is on its own circuit.