Originally Posted by 2003powerstroke16
and also does the gauge kits come with all the wiring and probes and how hard are they to install....im lookin at thouroughbred diesels kit for 309
Regular gauges? They're a snap to install. I'm assuming you're looking to install the usual(trans., boost., & pyro). Most gauges like AutoMeter & Issipro all come with everything you need to get 'em going. The toughest gauge to install will be your pyro. For the most accurate reading, I took out my driver's exhaust manifold. Drilled it & tapped it for 1/4" npt. Then you install the thermocouple & just follow the rest of the directions accordingly. Your boost gauge is the easiest. Most boost gauges will come with a T to plumb in the boost line into your MAP sensor line. Don't plumb the T too close to the MAP sensor. & your trans. temp is not hard to install, but you'll have to crawl underneath the truck. On the driver's side of the tranny, above the trans. pan and just behind the bellhousing is the tranny test port. Pull the plug(you might see a drip of ATF) & install the fitting provided in the gauge kit. You'll need a solderless "eye" connector & some 18 or 16ga wire. Crimp the eye connector to one end of the wire & bolt the eye(screw provided with gauge kit)to the fitting in your test port. Run the wire back to the gauge. There's a boot in the firewall you can snake all the wiring/boost line back to the gauges in the cab. Afterwards, the only thing you need to do is tap the wiring for the lights into a wire that's hot when your lights are on. I tapped mine into the dimmer switch for the panel lights. I couldn't tell you what color the wire is, as I heard they vary from year to year. Hope this helps.