Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Will I need a new wiring harness and battery on a 6 volt original configuration?
Document: You will need a clutch cable 2. If you want the old lights to work, you will need a wiring kit & a 12 to 6V converter 3. The old foot peg mounts will NOT fit because the new engine is a lot wider than the old engine so you need to get a whole new foot peg mount bracket setup 4. The old gas lines need to be modified or cap one end of the two lines because the new carb only has one fuel line. 5.
6. The rear brake pedal needs to be bent out more if you have even the slightest bend on your old one. Now that's what I wish someone posted. Now no need to worry because you can buy a lot of the parts you need on amazon or one of the vendors.One last note: The Engine I received was not the engine listed nor did it have the 1 down/3 up shift pattern.
This engine was not a direct replacement for the CT-70. It took some work. The wiring took some research to figure out, the exhaust pipe had to be altered (welding),clutch lever with cable added and the foot pegs required spacers with longer bolts due to the right peg hitting the Lifan's wider case, the chain guard had to be trimmed to fit with another bolt and spacer added also the new carb did not have a fuel valve on it so I had to rig a separate valve.
After all, "need" and "want" are two different things. I'm an old man, and I want all the fun I can get. Believe it!
I am planning to order this engine for my other CT70 as well. Just a note: I've had a Lifan 90cc engine in another bike for over 6 years. It starts even after sitting for 5 or 6 months and runs great every time. These are solid and economically priced engines.
Super easy to install even came with a new carb and the electronics were pretty easy to figure out  . I put it in an ssr 125 pit bike witch only lasted me 5 months .... The lifan motor has a lot more torque and no adjustments were needed put it in and fired it right up .... I had no experience doing this before and took my time it still only took 4 hrs
I purchased this engine approximately 1 month ago. It was fairly easy to install on my 1970 CT70. The wiring was the most difficult, but DRATV offers some wiring kits that help with that task. This engine accepts the stock exhaust, along with stock chain and back sprocket with no problems. I test-rode the bike and was pleasantly surprised at the power of this motor. The front-end lifts off the ground in 1st through 3rd gear with little effort.
I rememend using 1&#34; tube on the exhaust. Also make sure you get an air filter that is the right size for your carb.I was not sure about the original oil that arrived in the engine, it may have been some kind of break in oil but to me it looked like fogging oil and I drained it out and put in my own breakin oil just to be on the safe side. After the first oil change I pleased to find nothing alarming in the oil.
Was happy with this purchase, wiring diagram would have been helpful though. To much packaging oil, had me worried it was leaking.
this little engine fit the frame of my ct 70 without any problem, we did have to widen the kick stand\peg bracket to account for the additional width of the engine compared to the original 70 cc motor, very strong running,
Answer: yes