Gauge ??

when using a T in line for sending unit on temp gauge on pictures i see a ground wire on the T my question is where does that attach ???
to the gauge itself or frame or  - side of battery
thanks in advance 

You really need to check this site for grounding upgrades over the stock system. That being said, if you are stock you can connect to the neg. side of battery, but I suggest that you upgrade your grounding. One of our members (STEVES) has done extensive threads on this and I would check them out if I were you. Good luck and if I can provide any further help let me know.

TBOMB is rite this man really knows his business he has a couple postings on here talking about the issue and they are very informative. An by the sounds of reading some other posts if people could have seen his posts just a little earlier it could have saved them a lot of trouble.

I ran mine back to the gauge and added another wire from the gauge back to my ground block.