Airborne Janitor Posted February 6, 2023 Posted February 6, 2023 As almost all of us know, our stock MJ windshield wipers suck. The last few years I've done a few upgrades, from installing a reman motor, a NOS motor, replacing the bushings on the transmission. Each one only offered minimal improvement. Now I've "heard" a few guys say that you can swap over a late model XJ motor if you splice the pigtails, and I'm happy to report it does indeed work, and it makes the wipers "wipe" twice as fast! Comparison of the 01 XJ (top) and the 89 MJ wiper assembly. They are identical, except for the pigtails on the motor. I cut the pigtail off a spare 89 motor I had and spliced it onto the 01 motor. Here's the wiring: I also added an additional ground wire to the harness end of the wiper motor wiring inside the cowl. YouTube link of the procedure below. Skip to 25:37 to see the results. Everyone should do this upgrade to their rig!
87MJTIM Posted February 6, 2023 Posted February 6, 2023 What other year's motor will work? 97+ or later yrs.
Airborne Janitor Posted February 6, 2023 Author Posted February 6, 2023 Just now, 87MJTIM said: What other year's motor will work? 97+ or later yrs. No one looks at DIY :-(
Airborne Janitor Posted February 6, 2023 Author Posted February 6, 2023 Just now, 87MJTIM said: What other year's motor will work? 97+ or later yrs. I think it was maybe 94-95 when they got the performance upgrade, but can't go wrong with a 97+ for sure.
eaglescout526 Posted February 6, 2023 Posted February 6, 2023 1 hour ago, Airborne Janitor said: No one looks at DIY :-( If it’s Google searched, it’ll pop up.
Pete M Posted February 6, 2023 Posted February 6, 2023 2 hours ago, Airborne Janitor said: No one looks at DIY :-( the master DIY thread with all the links has over 100k views. but there's rarely much discussion so I prefer new threads to start here for comments.
pizzaman09 Posted February 6, 2023 Posted February 6, 2023 This is definitely a mod to add to the future list.
watchamakalit Posted February 6, 2023 Posted February 6, 2023 Will the faster wipers make my ducks more visible to oncoming traffic?
Airborne Janitor Posted February 7, 2023 Author Posted February 7, 2023 49 minutes ago, watchamakalit said: Will the faster wipers make my ducks more visible to oncoming traffic? Install a lightbar and have cheap LEDs pointed towards the dash!
cruiser54 Posted February 7, 2023 Posted February 7, 2023 What a great fix!! and clearly easy. Would you mind if I added it to my website?
Airborne Janitor Posted February 7, 2023 Author Posted February 7, 2023 5 hours ago, cruiser54 said: What a great fix!! and clearly easy. Would you mind if I added it to my website? Please do, I'm actually honored! Can't tell you how many times I've been on your site over the years to fix my rig, thanks cruiser!
Airborne Janitor Posted February 7, 2023 Author Posted February 7, 2023 4 hours ago, armyvet25 said: Will this work even on the 86 model? Rockauto says the 86 MJ uses the same motor as the other year MJs so it should!
Armyvet25 Posted February 7, 2023 Posted February 7, 2023 Just now, Airborne Janitor said: Rockauto says the 86 MJ uses the same motor as the other year MJs so it should! Awesome, mine needs it for sure, high is slower than normal, plus I want to add an intermittent relay
Airborne Janitor Posted February 7, 2023 Author Posted February 7, 2023 1 minute ago, armyvet25 said: Awesome, mine needs it for sure, high is slower than normal, plus I want to add an intermittent relay If yours didn't have the intermittent delay then you'll probably have to replace your turn signal stalk (aka: multi-function switch), and add the intermittent wiper control module.
Armyvet25 Posted February 7, 2023 Posted February 7, 2023 actually, thinking of leaving the oem turn stalk alone and rewiring to an aftermarket dash setup, delay will be on a rheostat, tied into the wiring
eaglescout526 Posted February 7, 2023 Posted February 7, 2023 3 minutes ago, Airborne Janitor said: If yours didn't have the intermittent delay then you'll probably have to replace your turn signal stalk (aka: multi-function switch), and add the intermittent wiper control module. It’s a bit more involved than that. He actually has to replace the current switch the signal stalk goes into with an intermittent one.
Armyvet25 Posted February 7, 2023 Posted February 7, 2023 I love wiring challenges, I'm going to leave the wiring stock but splice into the slow speed with a relay tied directly to a separate knob controlling speed at the dash, and replace the motor with the XJ upgrade
Armyvet25 Posted February 7, 2023 Posted February 7, 2023 When I get to it, I'll do a write up with pics supplies and how to
ghetdjc320 Posted February 7, 2023 Posted February 7, 2023 9 minutes ago, armyvet25 said: I love wiring challenges, I'm going to leave the wiring stock but splice into the slow speed with a relay tied directly to a separate knob controlling speed at the dash If you want to add a variable intermittent function, you need to send a "pulse" to the wiper motor low circuit. The motors' internal circuitry will then complete the rotation and land on park again. That pulse is on a variable resistance timer. Unless you're looking to just press a button and the wipers move once? If that's the case, the mist function works for that. The intermittent wiper switch in the column along with the accompanying lever and the intermittent module are required unless you want to design your own wiper delay module??? That's a ton of work Unless you're planning to splice in a pre-assembled wiper delay module to just send the pulse to the low side?? The factory version swap is very easy and quite cheap.
Armyvet25 Posted February 7, 2023 Posted February 7, 2023 10 minutes ago, ghetdjc320 said: If you want to add a variable intermittent function, you need to send a "pulse" to the wiper motor low circuit. The motors' internal circuitry will then complete the rotation and land on park again. That pulse is on a variable resistance timer. Unless you're looking to just press a button and the wipers move once? If that's the case, the mist function works for that. The intermittent wiper switch in the column along with the accompanying lever and the intermittent module are required unless you want to design your own wiper delay module??? That's a ton of work Unless you're planning to splice in a pre-assembled wiper delay module to just send the pulse to the low side?? The factory version swap is very easy and quite cheap.
cruiser54 Posted February 8, 2023 Posted February 8, 2023 18 hours ago, Airborne Janitor said: Please do, I'm actually honored! Can't tell you how many times I've been on your site over the years to fix my rig, thanks cruiser! I'm working horribly long hours now and the website is being contrary, but I will get this done. Pete
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