IDIOT BOY NEEDS help with first autometer install.

ok, these autometer instructions that came with my gauges are all the same, and they SUCK...MISSION IMPOSSIBLE: Install 2-5/8" Electrical Water temperature gauge into a 1990 mustang. I've looked thru all these instructions and it seems i need some 18gauge twin conductor wiring? my other confusion involves how i'm instructed to wire the wire from the GND (ground) terminal on back of gauge to a good engine ground near sender...okay...where's the engine ground and where does the sender go in the first place? THEN there's the wire from the back of the gauge thats supposed to go to the ignition switch, WHERE IS THAT? AAAAND I have to take one wire from the light (pos or neg?) to either the dash lighting or other 12V source (like what, and what dash lighting, i hear i cant stick it in the ciggy lighter cuase it'll always be on) I'm so lost its funny( not to me, sad rather) any help would..well, help.

You just need some regular old insulated, thin wire. Or just go parts store and tell them you need some 18gage wire. The sending unit for the water temp gauge go's in the place of the stock unit, which is in the lower intake manifold to the left of the distributor. You can ground it to any metal surface connected to frame. Just loosen some bolt in engine bay and tighten it back down on wire. Take the positve wire to some power source that is only on when car is running or when lights are on. If you dont then the gauges light will be on all the time and maybe drain battery. I hooked mine to the light that illuminates cigerette tray. Not sure if the fox body mustangs have a light there though. Hope this helps some of course try it at your own risk. If you need any more help let me know.

thanks i'll let you know when i get around to the task, hadnt had the time yet but soon i hope.