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Fisher 4 Port isolation

Discussion in 'Fisher Engineering Discussion' started by t.kelly0224, Aug 11, 2013.

  1. t.kelly0224

    t.kelly0224 Junior Member
    from bow, nh
    Messages: 10

    Hi Guys,

    So I'm starting to build a setup for my 2002 Dakota and I have a couple of questions. I picked up a complete 7.5 mm1 setup the other day that included wiring. Here's the problem, it came with a 26401 isolation module (4 port) and ematch calls for a 29070-1 module (3 port). Is there any way I can make the 4 port work?

    Thanks!
     
  2. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,526

    there is no difference between the two. it lists a 3 port because 4 ports are no longer made if you have a 4 port with the correct headlight wiring just put it in.
     
  3. t.kelly0224

    t.kelly0224 Junior Member
    from bow, nh
    Messages: 10

    So would there be an open plug?
     
  4. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,949

    If u goto fishers website and look up the wiring diag it'll show u how to hook up the 4 port module
     
  5. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,526

    3 or 4 port modules would still have 3 plugs going to the plow. Unless you set it up for a 2 plug multiplex system. I really don't understand your question. Are you saying you only got the module with no wiring or something. Got to be more specific so we could help.
     
  6. t.kelly0224

    t.kelly0224 Junior Member
    from bow, nh
    Messages: 10

    Ok, I guess I am confused as well. When I look up my truck on fisher it calls for a 3 plug ISo module. I bought a used plow that has a 4 plug module. That leaves an open plug doesn't it? Or are all new fisher two plug setups? That's where in confused. The plow is a 7.5 mm1 sehp 3 plug
     
  7. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,949

    Easy brad. Reread what he stated. He has a 4 plug iso. He's not sure how to hook it up b/c fishers website only lists a 3 plug. Again look up the wiring diag on fishers site
     
  8. 1olddogtwo

    1olddogtwo PlowSite Fanatic
    Messages: 11,511

    The Plough could care less how many ports is on the truck.
     
  9. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,526

    You are confusing ports with plugs. The plow or truck do not care weather you have a 3, or 4 or 47 port module they still have 3 plugs going to the plow. And they also hook up to the truck in the same way just the wiring is made slightly different.
     
  10. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,526

    I did read what he said he said nothing about how to hook it up he is confused be cause when you use e match they do not give you obsolete part numbers like a 4 ports module set up. They list a 3 port module. and corresponding wiring that goes with it. I will say it again like in my first post. If the module and harness he gave you have the correct headlight plugs for your truck install it and be done with it. Also if your sehp pump has 3 plugs it has been converted to 3 plug because thy are originally an old style 2 plug. If you have any questions how to hook it up or want me to explain to you if what you have will work I can private message you my # and I can walk you through it.

    http://library.fisherplows.com/fisherplows/pdffiles/29206.04_052407.pdf
    ^^^^^^^^^^ 3 port
    http://library.fisherplows.com/fisherplows/pdffiles/28561.04_052407.pdf
    ^^^^^^^^^^ 4 port
     
    Last edited: Aug 14, 2013
  11. innkeeper

    innkeeper Junior Member
    Messages: 13

    I had to bump this up because I am running into some issues as well with the exact module. I am uninstalling this from my 2000 gmc and was going on the assumption that everything just pluged in like what I have seen with the new electronics. By looking at this am I correct in assuming that I have to cut the wires were they are tapped into the main wire for the head lights and I shouldn't be looking for a plug?

    http://library.fisherplows.com/ddcommon/dd_pdf/pdfs/28376.05_091509_for_web_11x17.pdf
     
  12. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,949

    The parking and turns need tobe cut out. They are not plug ins
     
  13. innkeeper

    innkeeper Junior Member
    Messages: 13

    Ahhh OK, Just one other dumb question. The connector for the controller that is screwed to the under dash, when that is installed does it come without the plastic connector? (#115) because the hole that the wire goes through is way to small to geed the metal bracket and round plug through. Is the appropriate way to remove it is to just cut the wires?
     
  14. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,949

    Ummmm. Not sure. Maybe pics? But if your talking about the connector that the controller hooks up to that is not permanent
     
  15. innkeeper

    innkeeper Junior Member
    Messages: 13

    Yes, the female plug end that the controller connects to. 4 small screws hold it to the metal L bracket under the dash.
    http://library.fisherplows.com/ddcommon/dd_pdf/pdfs/28376.05_091509_for_web_11x17.pdf
    look at 115 if you could. that is what im talking about. The hole in the firewall is by no means big enough to fit that through. The main thing for me is I don't want to cut something that shouldn't be cut but as you can see #113 is a repair kit, perhaps for just this reason? Any comments? Thanks
     
  16. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,949

    so do you have the big circular end or the smaller 4-8 pin end?
    might have to take out the pins of the connector to get them out of the tk
     
  17. LON

    LON Senior Member
    Messages: 749

    gotta use the tool to undo the wires out of the plug so the harness can be taken back out through firewall. Have had customers just cut and splice though.
     
  18. innkeeper

    innkeeper Junior Member
    Messages: 13

    A tool, something like a ice pic maybe? I feel like an idiot cuz I seen what looked like threads on the back side so I assumed it screwed on :dizzy: my only excuse was it was getting late and getting tired.

    Lon, still need to call, I figured id better get this disassembled first. Are you around tomorrow?