how to change a ignition switch

{"cid":"91221159","title":"Fast Safe Gas Solenoid Valve Ignition Control Component","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/18\/3a\/5c492b64306aa30aa03202f66464-200x200-1.jpg","attrs":{"Price":"$5-$8Sets","Brand Name":"Vanka","Minimum Order Quantity":"50 Sets","Delivery Time":"30 work days","Certification":"ISO9001\uff1a2015,CE","Place of Origin":"China","Payment Terms":"L\/C,T\/T,Western Union,MoneyGram","Supply Ability":"20000 Set\/Sets per Month","Packaging Details":"570x340x165","Power Source":"Electric","Feature":"gas saving","Port Size":"Custom","Package Contents":"1 water heater accessory","Weight":"1 pound","Warranty":"1 year","Temperature Range":"90-150 degrees Fahrenheit","Installation Type":"Wall Mount","Gas Type":"Gas","Water Pressure":"Zero water pressure","Efficiency":"84%","Venting Type":"Direct Vent","Pipe Diameter":"60 mm","Size":"Standard","Water Valve":"Waterflow Sensor"}}

{"cid":"91201667","title":"Engineering Machinery Engine Air Pressure Sensor Switch 161-1703 197-8393 for E330C E324D E329D Excavator Spare Parts C7 C9","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/92\/00\/3eab22ef5e4ae5e65f39cf2cd11c-200x200-1.jpg","attrs":{"Price":"Price Negotiation","Brand Name":"JGC","Model Number":"161-1703 197-8393","Minimum Order Quantity":"1 Piece","Delivery Time":"3-7 work days","Place of Origin":"China","Payment Terms":"L\/C, D\/P, T\/T, Western Union","Supply Ability":"100000\/PCS","Packaging Details":"Carton Boxes","Model":"161-1703 197-8393","Appliion":"Engineering Machinery Engine","Warranty":"1 Year","Packing":"Standard Export Boxes","Type":"Air Pressure Sensor Switch","Brand":"JGC","Quality":"High Quality"}}