Welcome to the Nissan Patrol forum. To post a question and to see less adds on the forum then you will have to register
first. We are an easy going friendly forum so join in the conversations and feel free to ask any questions.
Become a forum sponsor for only $20 and see no adds with faster page loading times and many extras benefits.
Whether it's alloy or copper/brass, make sure it's not in contact with the chassis. Use a multimeter on the resistance setting and make sure there isn't contact. For what ever reason, when I filled mine up with coolant, the resistance went to a negative figure. Strange, but I know when it's empty there is no contact.