The connector is actually for the brake lite yes on the clutch lever lol you also need to pull the clutch to activate the starter along with the button and key switch on if you want to spend some mo et on it I would step one get decent tires look for 140/70/10 rear and 90/90/10 front those are easy to find and look for one with no lip or small lip on the side wall so it doesn't feel like its walking on hard corners I don't think slicks are available for 10"any more and you will notice real quick the rear shock is anything but that it's just a spring no damper look for a 6.5" shock for mountain bikes online or eBay or the metric size equivalent or people like blitz and swheels have done a linkage setup you can make to use a longer shock with more options I found one for my 18 for around 30 shipped on eBay but you will need to use the stock spring 1200lbs on the new shock because even the 750 is too soft on the stock location
Step two I would suggest a trail tech vapor for tach Speedo and temp along with shift indicators and warning lamps as well
You can also replace the front shock oil with 80w90 for better damping
You can look at some of my pics for some ideas as well I have up I have a 15/18&19 I've been playing with
But the tires and shock are a must before track time I say
There are other things you can get to wake these motors up like a super oil ngk plug
Blue cdi
Mikuni 22mm carb ECT
Welcome to the forum and I hope I answered questions before you asked
Lol also I use mobile 1 4t 10w40 works good for me
Step two I would suggest a trail tech vapor for tach Speedo and temp along with shift indicators and warning lamps as well
You can also replace the front shock oil with 80w90 for better damping
You can look at some of my pics for some ideas as well I have up I have a 15/18&19 I've been playing with
But the tires and shock are a must before track time I say
There are other things you can get to wake these motors up like a super oil ngk plug
Blue cdi
Mikuni 22mm carb ECT
Welcome to the forum and I hope I answered questions before you asked
Lol also I use mobile 1 4t 10w40 works good for me