88mjblue Posted October 5, 2014 Share Posted October 5, 2014 On my other 4.0L's I've had these built-in spark plug wire looms (see below). On my new renix MJ, I don't have these and don't see any sign of there ever being any. I know there are aftermarket spark plug wire looms, has anybody had success with them? How do you mount them, to the valve cover bolts? Thanks, I want my wires to be nice and organized. Link to comment Share on other sites More sharing options...
91Pioneer Posted October 5, 2014 Share Posted October 5, 2014 Hit up a junkyard Link to comment Share on other sites More sharing options...
gogmorgo Posted October 5, 2014 Share Posted October 5, 2014 Google zip-tie wire separators. Link to comment Share on other sites More sharing options...
Eagle Posted October 5, 2014 Share Posted October 5, 2014 I've never seen looms like that on an XJ or MJ. I don't even like the concept -- the more you run the wires parallel, the more you create the possibility of cross-fire. Link to comment Share on other sites More sharing options...
91Pioneer Posted October 5, 2014 Share Posted October 5, 2014 My 91 MJ has that plastic separator. Link to comment Share on other sites More sharing options...
ScottJeep Posted October 5, 2014 Share Posted October 5, 2014 Had those separators on my 97' XJ. Link to comment Share on other sites More sharing options...
HOrnbrod Posted October 5, 2014 Share Posted October 5, 2014 They used those wire separators from 1991 - 1999. Link to comment Share on other sites More sharing options...
88mjblue Posted October 6, 2014 Author Share Posted October 6, 2014 I've never seen looms like that on an XJ or MJ. I don't even like the concept -- the more you run the wires parallel, the more you create the possibility of cross-fire. I have heard that before, but these are OEM looms designed to prevent crossfire. I have another idea: what about getting cut-to-length ignition wires and cutting them as short as possible from distributor to spark plug? Link to comment Share on other sites More sharing options...
FrankTheDog Posted October 7, 2014 Share Posted October 7, 2014 Get the oem looms and run them like the picture with oem wires. I've only had one HO XJ that arced out and it was @ 145,000 on the original wires. Link to comment Share on other sites More sharing options...
Blue XJ Posted October 7, 2014 Share Posted October 7, 2014 You should have any issues running them like that. The EMI field that might come out of them if the insulation is damage will interfere with others less than compared to crossing each other perpendicularly. Link to comment Share on other sites More sharing options...
88mjblue Posted October 11, 2014 Author Share Posted October 11, 2014 You should have any issues running them like that. The EMI field that might come out of them if the insulation is damage will interfere with others less than compared to crossing each other perpendicularly. Perpendicular cross is bad, right? I see hot rods running long stretches of parallel wires all the time... Link to comment Share on other sites More sharing options...
Blue XJ Posted October 14, 2014 Share Posted October 14, 2014 Yeah, I mistyped on my first post, he shouldn't have any issue running them parallel to each other. That is prefered, criss cross would be bad, assuming the insulation failed. Link to comment Share on other sites More sharing options...
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