Info Manual

 Ever wonder how a gear position sensor of small bikes look like, photo shown is where it is located. This sensor from a Suzuki Shogun 125cc is located near the front sprocket, the transmission shift of this bike is 1 down 3 up with neutral in the middle of 1st gear and 2nd gear.

 After removing the two screws that hold the sensor on the engine, upon pulling out, you will notice the contact with 4 big circle and 1 small which is the neutral, it works actually by contacting it with ground.
 This is how it looks like after the sensor is remove, notice the single PIN which rotates in accordance with the selected gear and will contact with the dot on the sensor. it can be remove to adjust the tension of the spring to make it stiffer and allow it to contact more with the switch, if u have problems of intermittent like i do this is where the problem exist and not with-in your panel indicators.

Having a gear indicator like this one is a very handy visual partner to alert us to what gear we are driving our motorcycle. Some think its un necessary, but sometimes the mind gets blank and forgotten that we are driving at the wrong gear position.

The photo shown with separate gear indicator is very common nowadays with cheap bikes, A designated number on the panel tell us the gear position, (think outside the box here)....

Why not put a seven segment display to show the current gear position.

CIRCUIT

I derived the circuit from this seven segment gear indicator. I had built the unit, but not yet incorporate it inside my panel, it is under on my project plan.



This is the circuit i'll be using on this modification and eliminate the old indicator on my panel, consisting of very cheap and few parts readily available at any electronic part store, The heart of the circuit is based on the mighty 4511 , is a BCD to 7-Segment latch/decoder/driver, that will drive the seven segment display.