just got the rear back together and boy are those side adjusters a PITA!! it took a good 30 mins to get the threads lined up to put the cap back on. also adjusted the rear brakes while it was apart. hopefully this rear last till i can rebuild and install the full widths!
I got the sgi-5 installed, but it picks up noise some times when sitting still. I have heard putting a capacitor or a voltage regulator in the power line of the interface will get rid of it. Just another thing to be a PITA I guess.
Got ya bro. One wire to input on speedo and ground the other one. Doesn't matter which wire. It sends a 40 pulse per revolution a/c sign wave. I have read to twist the wires to cancel any "noise" that could come up in the signal.
I got the speedo to atleast read something today. only problem is its about 2 times the speed im actually going. so i either have to run the dakota box or call the guy that i got the gauges from to figure it out. right now the gauge is showing over 64,000 ppm (which is the highest the gauge will go).
When I got my count it was over 100k ppm. I had to use the SGI-5 to reduce to 4k ppm (because that is what my TPI computer needed to see to work properly). See below for calculation. Note that the calcs are theoretical if my tire was exactly 33", but it gives you the idea. PM me your number if you want and I can walk you through everything easier as far as cal of speedo or sgi-5 wiring and cal (if needed). I got mine spot on (gps confirmed) at 80mph.
i got my speedo reading closer but still isnt right. i set the sgi-5 to 8000ppm. it is alot closer than i have had it but it will not read over 60mph. so im not sure how to get the ppm up higher so it reads at higher speeds. this little box is confusing!! on a good note, it was warm enough today to cruise with the windows unzipped . first time this year, but still had to have a sweatshirt on.
Get a GPS then go drive to 40 miles per hour on your speedometer and write down what your GPS is reading .
You will need to know which calibration ratio you are on goto page 3 and follow the directions that will tell you how to look up what Cal ratio you're actually using
You will need to use the calibration table page on the back of the directions. they will tell you which course in fine setting you have. examples 15 course 8 fine has a cal ratio of 3.368 cal hi or .842 cal lo. Hi is dip switch 4 on. Lo is dip switch 4 off.
Once you have speed (gauge), speed (GPS), and cal ratio use the formula on page 5
Find the number on the cal table that is closest to your new cal ratio. If your number is not between .251 and 4 then flip dipswitch 4 and repeat process.
Once you have found your fine and course settings do the preset adjust while parked on page 3 (also pictured above). Let me know if this works
it has been a while since i have posted anything. havent done much with the jeep other than on warm days drive around with the doors off! i have found out if anyone is looking to replace there factory gauges, donot buy cheap!! buy autometers, because in the end this is what you will end up buying! my temp gauge likes to read around 225 when the engine is really running around 195 checked with a thermal temp gun. i have been buying a ton of tools lately which has been bringing the bank account down a good bit so the gauges will have to wait for a little. i still have yet to properly set me speedo too, (major procrastination!!) we have been busy doing other things including rebuilding the trans for in our mud truck (ford e4od) there are a lot more pieces in this trans than the little c4 in the ranger!! tpiyj thank you for the detailed explanation for setting the speedo even though i havent gotten around to doing it yet.
just another small update, got the jeep all cleaned up for the first time this year! also just ordered autometer gauges for it should have them in a few days. thats about it for the jeep, but have been busy getting the ranger ready for Saturday!! its sitting alittle wider than last year and the front is set up more like a jeep than before. also just throwing up a pic of our little cj5 next to the ranger for size comparison
The gauges should have a sending unit that comes with a wiring diagram. You can power all the gauge lights using a common ground and light source. If the gauge needs an ignition power you can either run them all with a common (fused) or separately from a fuse block.
The gauges were actually pretty easy to do for me. Just do it one wire at a time. I got a factory wiring schematic for the jeep gauges at the plug and found the corresponding wires in the engine bay. Then I just used spade connectors so I can pull the dash out (easier without cutting) if needed. I can't remember if I posted or not but I converted all the 2 1/16 gauges from cheapo gauges to autometers.