Wiper Delay Module Compatibility

[TeKdo]

Finally decided that it's time to get my wiper delay working properly as the rainy season starts here in Washington.

 

Just wondering what models I can rob from at the junkyard for my old '86. I've heard of XJ guys using ZJ wiper delay modules but I dunno if they'd work in a Comanche because of the Rear Wipe function.

[eaglescout526]

Believe it or not, the rear wiper circuit is completely separate from the front wiper unlike todays vehicles. So any wiper delay module will do. And you can’t just stuff the module in and have wiper delay. You’ll need the switch from the column too. 

[TeKdo]

52 minutes ago, eaglescout526 said:

Believe it or not, the rear wiper circuit is completely separate from the front wiper unlike todays vehicles. So any wiper delay module will do. And you can’t just stuff the module in and have wiper delay. You’ll need the switch from the column too. 

Sweet, good to know.

 

Also I actually happen have the wiper delay combo switch on my column already, my old wiper delay module just died so I have it out of the truck right now.

 

Edit:
I do currently have wipers that work on the truck, I just plugged in the connectors that are supposed to go into the wiper module into one another to bypass the module. Wipers work at low and high and I still have mist and washer jets too, just no delay

[Mikey1989]

I see alot of wiper relay modules on eBay for $65+ but am lacking confidence they will work and reluctant to pay that much to find out. Went by our local pull apart yard today, two comanches and four cherokees close to my 89 comanche year and only one still had a relay module. It did not work though. Sigh...

[eaglescout526]

13 minutes ago, Mikey1989 said:

I see alot of wiper relay modules on eBay for $65+ but am lacking confidence they will work and reluctant to pay that much to find out. Went by our local pull apart yard today, two comanches and four cherokees close to my 89 comanche year and only one still had a relay module. It did not work though. Sigh...

Someone on here was fixing these, most the time the internals corrode or fail. Did your yard have any ZJs?

[Eagle_SX4]

2 hours ago, Mikey1989 said:

I see alot of wiper relay modules on eBay for $65+ but am lacking confidence they will work and reluctant to pay that much to find out. Went by our local pull apart yard today, two comanches and four cherokees close to my 89 comanche year and only one still had a relay module. It did not work though. Sigh...

I have at least one extra you can have. I will find it tomorrow and test it. PM me and we can work something out.

[Mikey1989]

@eaglescout526 I'll get some more pics next time I'm at the yard if there is a ZJ - most of their vehicles are pretty picked over though

[schardein]

I have a setup for testing these.  A steering column with delay switch on a bench, and wiring adapters to also test the 3 different XJ wiper motors, as well as CJ and YJ wiper motors.  And a bench 12v power supply.  I've got boxes of modules that don't work.  Seems like about one of ten works.  And even if you find a good one, there's no guarantee they will last.  I converted my CJ to a YJ column, gaining the wiper switch with delay on the column.  I put a tested delay module in and less than two years later it's stopped working.  Whoever figures out how to repair these will have all the business they can handle.  

 

I recently sold a good (tested) module on eBay.  Then the buyer contacted me claiming it was bad.  Knowing that it was a possibility, I accepted the return.  Turns out he had opened the case (damaging it)(and he admitted opening it in a message) and switched out the circuit board with his bad original, and then returned the junk to me.  I'll no longer be selling them on eBay, but if I find good ones, I'll offer them to members here.  I charged a high price, because finding a good one is difficult, and mine are tested.  But I'm starting to think they might not be worth that much given the failure rate.

 

I've tested modules from XJs and YJs (marked XJ/YJ), and ZJ modules marked "ZJ only". The couple ZJ modules I've had worked and tested fine in my bench test setup. I figure there must be a reason they had two different part numbers, but in my limited experience they are compatible with XJ/MJ/YJ. 

[eaglescout526]

12 minutes ago, schardein said:

Turns out he had opened the case (damaging it)(and he admitted opening it in a message) and switched out the circuit board with his bad original, and then returned the junk to me.

Wow....this is why I have all my sales final. Course ebay has a crappy seller protection in place so the customer can rob you regardless. 

[schardein]

16 minutes ago, eaglescout526 said:

Wow....this is why I have all my sales final. Course ebay has a crappy seller protection in place so the customer can rob you regardless. 

I make over 100 sales per month. I figure at that volume, I'm bound to deal with one or two bad apples.  Although it is frustrating when it happens.

As for eBay's policies, I think they do a really good job of being fair to both the buyer and seller. I would say they have actually improved in that area over the years.  Yes, they do have a return policy that even if a seller says no returns, the buyer can still return it, if the item is "not as advertised".  Which of course opens the door to abusing the policy.

 

In this case, I gave the seller a 50% refund, giving my reason as the opened and damaged module.  I can't prove he switched the internals.  He then complained to eBay, claiming I did the damage myself.  Which really, how do I prove I didn't?  Ebay refunded him the other 50%, but at no cost to me.  In other words, eBay ate the difference.  Good on them.  I blocked the customer from seeing/purchasing my listings, I have a one strike policy in that regard.

[eaglescout526]

4 minutes ago, schardein said:

In this case, I gave the seller a 50% refund, giving my reason as the opened and damaged module.  I can't prove he switched the internals.  He then complained to eBay, claiming I did the damage myself.  Which really, how do I prove I didn't?  Ebay refunded him the other 50%, but at no cost to me.  In other words, eBay ate the difference.  Good on them.  I blocked the customer from seeing/purchasing my listings, I have a one strike policy in that regard.

Its this kind of crap that irritates me when selling through ebay. Yeah its a huge audience but then you get the scum that abuse the policy like walmarts return policy. Then again retail had that coming...anywho I could go on a huge tangent but thats a pub post for another day.

[The86manche]

20 hours ago, eaglescout526 said:

Someone on here was fixing these, most the time the internals corrode or fail. Did your yard have any ZJs?

That's me but things have put it on the back burner for the time being. I need to rig up a live test harness so I can probe and see what's getting power or not through them.