Aftermarket TPMS

Anyone have a kit they prefer/have had good luck with? I have seen some battery powered ones that look promising, thus avoiding tying into the electrical system. Love to put one in the Taco.

 

I've got an Orange Electronics tpms. Absolutely love it. Especially the little LCD screen. Shows tire temps, voltage, and of course real time psi of each tire. can program when rotating tires to line them back up in proper order on screen. Have it set off an alarm at certain low psi down to 18 I think. That's the only downside to it, if you air down when wheeling. But I rarely do and just air down no lower than that so it doesn't go off. Had it for about a year maybe two now. Although I'm not sure they sell them anymore.. I think I got mine on Amazon. Had big o install the sensors.

 

Different version on Amazon now.
Here's the one I got
http://pages.ebay.com/link/?nav=item.view&id=351237610087&alt=web