did you buy it used? the instructions that come with them are very good and have good pics and details. only confusing part is the fuse box, but once you get which direction the picture is facing its not bad

http://www.nhtoc.com/vbforum/showthr...t=efan+install
there's the thread i put up when i first got the Efan 2 years ago. probably some tips in there or something


one tip....for the sending unit....alot of guys try to do it from under the truck and take a coolant bath
just jack the drivers side up, pull the drivers wheel off, and the sending unit goes right in front of you in the block. makes the install for that nice and quick and easy and hardly any mess at all. i lost maybe an ounce of coolant at most