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Wiper motor question?

Discussion in 'Early CJ5 and CJ6 Tech' started by durk, Feb 2, 2014.

  1. Feb 2, 2014
    durk

    durk Member

    Ontario/Canada
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    Hey everyone, I could use some advice on my 1968 electric top mounted 2 speed bosch wipers, Im sure they are the stock wiper motors. I rewired with 4 conductor cable to 1st motor and jumpered over to pass motor, switch is ground well, stock switch appears to be double pole double throw??. Wipers turn on and off, run in slow and fast... its the park thing, they will not swipe back to top of windshield. I do have HOT 12v from run of ign to wiper switch. Its terminated to the red (park) lead to wipers??? Plus wiper feed cable and switch well grounded!
    Any insight would be helpful thanks everyone
    J
     
  2. Feb 2, 2014
    Middlefork Miner

    Middlefork Miner Member

    N. Highlands Ca
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    I have to "time" my wipers position I want them in when I flick the switch to off...
     
  3. Feb 2, 2014
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2021 Sponsor 2020 Sponsor

    cordele, Ga.
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    We went through a lengthy discussion about these American Bosch motors and switches a couple a years ago. Can't remember if it ever got resolved or not. American Bosch has several diff motors as well as various switches that will and will-not work with the park capability. Maybe someone here has your same set-up and can shed some light on problem.
     
  4. Feb 2, 2014
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    Thought the '68 started the bottom of the windshield mount for the wipers?
     
  5. Feb 2, 2014
    Middlefork Miner

    Middlefork Miner Member

    N. Highlands Ca
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    My 66' has the bottom mount windshield wipers, but I'm sure one of the PO's swapped it on at some point. It's certainly not my highest priority BUT it would be nice to know how/what I need to do to get them to "PARK" themselves...
     
  6. Feb 2, 2014
    piffey263

    piffey263 Active Member

    Medford, OR
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    sorry nothing to add to the OP,

    often people will switch to bottom mounted wipers to be able to see better. Your 66 would of had top mounted from the factory.


    Sent from my iPhone using Tapatalk - now Free
     
  7. Feb 2, 2014
    Johns1967CJ5

    Johns1967CJ5 Sponsor

    Northern NJ
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    My 67 has top mounted motors, original
     
  8. Feb 2, 2014
    durk

    durk Member

    Ontario/Canada
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    Hey thank for replies mines all stock i would think very early 1968! I guess ill have to work on timming the stop of switch! Thanks J
     
  9. Feb 2, 2014
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2021 Sponsor 2020 Sponsor

    cordele, Ga.
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    Can you give us a model no from one of your motors? It might help.
     
  10. Feb 3, 2014
    jeepcj

    jeepcj Member

    cincy, Ohio
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    Mines a 69 with bottom mounted motor, same problem though, I have to time the stop.
     
  11. Feb 3, 2014
    jwmckenzie

    jwmckenzie Sponsor

    Boston, MA
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    Here is the information I took off my 67 CJ6 when I took it apart. Found a NOS Switch on eBay (Crown also has a re-pop) and had Walcks build me a new harness from the old one. They parked when I took them apart using a simple toggle on/off switch tied to the hi speed, so expect it will work when I put it back together. Will let you know in a month or two. Hope this helps.

    Note the eBay guy still has some of these switches. http://www.ebay.com/itm/321181139243?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

    [​IMG]
     
    Last edited: Feb 3, 2014
  12. Feb 3, 2014
    davistroy

    davistroy Grasshopper

    Marietta, GA
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    Would love to have some of those OEM style motors ... anyone know where to get those?
     
  13. Feb 3, 2014
    jwmckenzie

    jwmckenzie Sponsor

    Boston, MA
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  14. Feb 3, 2014
    djbutler

    djbutler Sponsor

    Rio Linda CA
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    So, do the two motors keep synchronization with each other, or is one a little faster than the other?
    I used to run the same bosch motors on my '66. What I found is that each one has a park switch internally. If you try and shut them off when they are out of synch, power feeds back from the lagging motor to the motor that just tried to park and it starts another wipe cycle.
    I found I could just wait a few moments until both motors were close to synch, approaching the end of the wipe cycle then shut off the switch. Both would then park.

    Don
     
  15. Feb 3, 2014
    jwmckenzie

    jwmckenzie Sponsor

    Boston, MA
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    Mine are not synchronized, but close when I did the trial before I took it a part. not sure how they parked.....
     
  16. Feb 3, 2014
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member

    Tantallon, Nova...
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    I had that problem- A diode in the power line between the first & second motor will fix that.

    H.
     
    65CJ5 SRD likes this.
  17. Feb 3, 2014
    durk

    durk Member

    Ontario/Canada
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    Thanks for all replies everyone, helpful info! Yes i guess the leading motor would back feed onto the lagging motor... so no harm in terminating a diode. Also has anyone jumpered the front parking lamps circuit at the headlight switch to be energized while headlights are on.... that one had me at a loss! Awesome info on this site!! It must be possible just what terminal are common to each other at switch?
    thanksJ
     
  18. Feb 3, 2014
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2021 Sponsor 2020 Sponsor

    cordele, Ga.
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    If you put your park light wire on the same terminal as the tail lights they stay on when you pull on the headlights.
     
  19. Jan 14, 2017
    jwmckenzie

    jwmckenzie Sponsor

    Boston, MA
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    Update, I received a question re on this thread and when I looked at it, there is a mistake in the diagram. Here is where I am at with the wiring, Comments?

    [​IMG]

    Here is the Park Circuit.

    [​IMG]
     
    Hellion and maurywhurt like this.
  20. Jan 14, 2017
    jwmckenzie

    jwmckenzie Sponsor

    Boston, MA
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    Received this information a fellow Member who has an original switch.

    "I just put an ohmmeter on my switch terminals and got the following results:

    - When the switch is in the On position, the two terminals with the red primary motor power wires, as well as the terminal with the brown wire (probably park), all connect to the 12v power input terminal, which has the bluish-white wire plugged into it.

    - When the switch is in the Off position, the terminals with the red wires are disconnected from the 12v power input terminal, but the terminal with the brown wire is still connected to the power input."

    I will encourage him to put the pics of the switch here.

    Jon.
     

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