Optional Wiring Add-ons Below are some additional wiring options to enhance your install or meet any specific requirements you have. Do the same with the black wires. Attach the battery end of the black wire to the negative battery terminal or ground using the ring terminal. Crimp a butt connector to the blue fan motor wire, sliding the wire into the connector until the insulation contacts the metal inside the connector. Any business or income producing activity using tangible assets may incur costs related to those assets. Potential Jobs for Foreigners in Thailand 1. Locate the radiator inlet and slide the temperature probe between two of the cooling tubes within two inches of the inlet.