alright, i have the 5/16 temperature manifold and it's hooked in the return line going back to the trans from the cooler. there is also an electronic sending unit in there from autometer to my gauge ( also autometer ). now my problem - summit told me NOT to use teflon tape in order to get a good reading. i have tryed this and all i can say is i had leaks coming from every hole. went back to using teflon tape and still no reading. they sent me a new sending unit thinking i had a bad sender. tryed it again with no difference. the unit is grounded through the manifold but i can't seem to get a reading. everything is grounded and working the way it should. so i went back and looked at my temp manifold instructions, and it said it needs to be pointed in a downward angle.... i have mine sitting flat on the front support brace. could that be mine problem???