Since I posted this, I found that K&R truck in Holland, MI has about 6-7 of them that they've pulled out of junked trucks. You can buy them all day long for $100-150. I bought a ScanGaugeD that displays all the info the ECM outputs for $150. And it's a simple plug into your ecm diagnostic port hook up. See my post about it with pictures. $250 is way too much for a RR4..
Wanted: Roadrelay 4
Discussion in 'Trucker Forum Classifieds & Trading Post' started by Marmon man, Aug 2, 2011.
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