Wiper Switch Conversion, Different for Early Cars? What am I missing? |
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Wiper Switch Conversion, Different for Early Cars? What am I missing? |
BeatNavy |
Sep 28 2014, 01:45 PM
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#1
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
So today was going to be a good day to do the wiper switch upgrade as my car's up on jackstands for brake issues and probably will be there for a few days. I was following the Pelican Article which describes itself pertaining to '74 (I've got a '72). But I've read through a lot articles on this, and I don't recall seeing any distinction between early/late cars. I ordered this 924 switch (part number 111953519G as per the article).
Anyway, once I started the process I ran into several issues which have me stumped. First of all, the quality overall seems sketchy. I had seen the caveats on the quality of this one, but even then the quality seemed suspect to the point that I'm not sure it would work at all. Then I ran into the following additional issues as annotated in the picture below: 1. The layout is different than what I had seen in other pictures, and the wire colors did not match the old switch. There's a contact anchored to the outside of the switch that I have seen in other pictures on the inside....which wouldn't bother me except... 2. ...it's held in place by a bolt and nut going through one of the holes that should hold one of the four metal sleeves that hold the turn signal and wiper assemblies together. WTF? I assume that this contact is necessary, but it will fall out without that bolt in place. 3. The actual holes in the metal piece through which the sleeves should slide were too small. I took a drill bit and by hand worked them wide enough so I could get the sleeves in, but it still makes me question if I have the right part. 4. Dog, recovering from ACL surgery, is no help at all. Has anyone else been successful doing this on an early car with this specific part (from this vendor) and do you recommend a different part/vendor? Thanks for your help. Winter's coming. I'd like to be able to clean the windshield. |
BeatNavy |
Sep 30 2014, 02:29 PM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
So I took out the fuel tank today and removed the fresh air blower housing (fixing that is a whole 'nother tale).
Anyway, I am looking for that extra, do-nothing wire that is "conveniently" located somewhere in the front trunk. Given that few things, if anything, are "convenient" on a 914, I am skeptical. Is this thing real or myth? Has anyone actually seen this wire or taken a picture of it? Well, I did find this wire that matches the brown with black stripe as the unused "fifth" female connection on the steering column. In the picture below, the wire comes out of the harness and doubles back on itself into the harness. I can't find an extra wire on the pre '73 wiring diagrams although there is one marked on the later diagrams that matches this color. So why would a wire double back on itself in the wiring harness? Did the engineers put that there with the intention of using an electric pump for the washer? |
HalfMoon |
Sep 30 2014, 04:50 PM
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#3
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Senior Member Group: Members Posts: 828 Joined: 13-November 12 From: Shenandoah Junction, WV Member No.: 15,144 Region Association: MidAtlantic Region |
So I took out the fuel tank today and removed the fresh air blower housing (fixing that is a whole 'nother tale). Anyway, I am looking for that extra, do-nothing wire that is "conveniently" located somewhere in the front trunk. Given that few things, if anything, are "convenient" on a 914, I am skeptical. Is this thing real or myth? Has anyone actually seen this wire or taken a picture of it? Well, I did find this wire that matches the brown with black stripe as the unused "fifth" female connection on the steering column. In the picture below, the wire comes out of the harness and doubles back on itself into the harness. I can't find an extra wire on the pre '73 wiring diagrams although there is one marked on the later diagrams that matches this color. So why would a wire double back on itself in the wiring harness? Did the engineers put that there with the intention of using an electric pump for the washer? I believe that's it. Pin 5 was for the dealer intermittent wiper option. Try unplugging your j connector from the base of the column and use a continuity tester (very different from a test light I might add). If you don't have one ya can borrow mine. Or I guess you could use a test light on it and see if activating your washer lights up the light.... |
BeatNavy |
Sep 30 2014, 05:58 PM
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#4
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
I believe that's it. Pin 5 was for the dealer intermittent wiper option. Try unplugging your j connector from the base of the column and use a continuity tester (very different from a test light I might add). If you don't have one ya can borrow mine. Or I guess you could use a test light on it and see if activating your washer lights up the light.... Bing! Bing! Bing! We have a winner, Dave. I went ahead and cut that wire and I get 12V when pulling back on the wiper switch. Ok, this is good progress. Now I just need to wire up, secure the pump, and I'm on my way. As a bonus, I took out the fresh air blower and got that working again after cleaning the crap out of it. Thanks for your help, Dave! I need to schedule a time to come help you with yours once I get my brakes working again. rob c. |
HalfMoon |
Sep 30 2014, 07:02 PM
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#5
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Senior Member Group: Members Posts: 828 Joined: 13-November 12 From: Shenandoah Junction, WV Member No.: 15,144 Region Association: MidAtlantic Region |
I believe that's it. Pin 5 was for the dealer intermittent wiper option. Try unplugging your j connector from the base of the column and use a continuity tester (very different from a test light I might add). If you don't have one ya can borrow mine. Or I guess you could use a test light on it and see if activating your washer lights up the light.... Bing! Bing! Bing! We have a winner, Dave. I went ahead and cut that wire and I get 12V when pulling back on the wiper switch. Ok, this is good progress. Now I just need to wire up, secure the pump, and I'm on my way. As a bonus, I took out the fresh air blower and got that working again after cleaning the crap out of it. Thanks for your help, Dave! I need to schedule a time to come help you with yours once I get my brakes working again. rob c. Well I'm pretty astounded! I couldn't get that switch to work to save MY LIFE! Teach me what you did dood! D |
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