Comtec Engine Starter with harness for JA11 Jimny. A self-made instruction manual is also included, so I think it can be easily installed. The setup instructions are also illustrated on the main unit, so it's easy. I have checked the item before listing, so I cannot respond to issues such as not being able to install it or start the engine. This is a used item, so basically, it's 2N (no claims, no returns). Please purchase with understanding. Installation is at your own risk. Please be sure to perform the initial settings written on the main unit. It has a turbo timer, so I think it's very good. First come, first served. Thank you. (Added November 21, 2022, 9:16 PM) Recently, a person named daddy sinceity purchased this item on another site and said the engine wouldn't start. I thought it might be a initial defect, so I kindly offered to exchange it for a different one. However, when the engine started properly with the replacement, and I asked for the original item back because the exchanged item was very rare, they got angry and said, "You were the one who said you would exchange it!" They even left a negative review. Therefore, I will not accept returns or exchanges. Thank you for your understanding. I offered this out of kindness, and it's disheartening to be treated that way.