negative side of ignition coil

{"cid":"91223144","title":"Jichai 12V190 Originally Imported Motortech Ignition Coil Spark Plug Mic500 Ignition Controller 1812t. 90.10","imgUrl":"https:\/\/img.chinax.com\/nimg\/d6\/7c\/30349642adfef6104c5bed799796-200x200-1.jpg","attrs":{"Model NO.":"1812T. 90.10","Cooling \r\nMethod":"Water Cooling","Installation \r\nMethod":"Fixed","Generator \r\nType":"Diesel Generator","The Cylinder Diameter":"190","Arrangement of Cylinders":"\"V\"","Land for Sale":"The National","Transport Package":"Export Wooden Case","Trademark":"hongfan","Origin":"Jinan, Shandong, China","HS Code":"8409999000","Production Capacity":"10000pieces\/Year"}}