So my auxiliary fan doesn't turn on any longer. (The problem is that I live in Michigan and have my car stored winters/ also had a cold air intake installed, which IDK if that is related.)

So basically I cannot tell how long this has been happening. IE you KNOW when the aux fan runs bc it's so loud but surprisingly didn't notice it NOT running until now.

I purchased a set of new fan relays to put in but can't even find a diagram to show me where they go? - Figured this would be a easy/cheap check.

Also I am not sure where the temp sensor is located to kick it on?