The Most Comprehensive Free Online Reference for Packard Owners
Become a member of Packard Motor Car Information, right now! (it's free)
Login
Username:

Password:

remember me

Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who's Online
51 user(s) are online (31 user(s) are browsing Packard Forums)

Members: 0
Guests: 51

more...



« 1 (2)


Re: dashlights dimmer switch
Home away from home
Joined:
2016/3/13 15:24
From Coalmont, B.C., Canada
Posts: 632
Thanks for the replies gents. Howard I rephotographed the switch as requested. (below) On this switch, all that was connected to it was what you show as the power lead. When you say the reading light, is that the overhead cabin light you are referring to?? As it has a switch on the passenger side door pillar. Does this switch override that one, so the driver can turn on the light without having to reach across the car??
The unit is tight - that is the rivets on all 3 lead screws are secure and I cannot detect any movement or play in the brass shaft itself. How would one test this unit for diminishing voltage? It sure seems to be a quality built piece; made to last, that's for sure. Also, any idea how I can track down the other 2 missing wires? Like I said, I'm a bit of a puddin'- head when it comes to electrical, but I eventually figure it out! Thanks for your time, (and patience!) much apprec. Chris.

Attach file:



jpg  2019_11_14_0491.JPG (175.78 KB)
121627_5dcd00fc213f2.jpg 1732X1154 px

jpg  2019_11_14_0494.JPG (231.50 KB)
121627_5dcd01123a110.jpg 1732X1154 px

Posted on: 11/13 23:25:34
_________________
'If you think you can, or you think you can't, you're right!' Henry Ford

1939 Six, Model 1700

http://packardinfo.com/xoops/html/modules/registry/index.php?Action=view&ID=1823
Transfer the post to other applications Transfer


Re: dashlights dimmer switch
Home away from home
Joined:
2015/1/16 9:43
From sw, pa
Posts: 949
Looks to me like a broken connection on the back of the switch, where that green corrosion is. There should be a connection between the 2?

Posted on: 11/14 6:17:46
Transfer the post to other applications Transfer


Re: dashlights dimmer switch
Home away from home
Joined:
2008/10/31 12:20
From Portland, Oregon, USA
Posts: 1342
Nice work on the tool, Chris. I got one of these for the Jag. You saved yourself $30.
https://www.sngbarratt.com/us/#!/Engli ... f3-4e05-9ff8-5b64926e440a

Attach file:



jpg  bezelremovertool.jpg (184.76 KB)
1067_5dcd6bef93e4c.jpg 1768X980 px

Posted on: 11/14 7:00:18
Transfer the post to other applications Transfer


Re: dashlights dimmer switch
Forum Ambassador
Joined:
2007/4/20 17:54
From Fresno CA
Posts: 15401
After seeing the second set of photos I am reasonably confident the terminals are identified correctly on the switch. The question now is whether there is corrosion causing the problem or a broken wire. I am leaning toward corrosion as I suspect the wire from the end of the rheostat goes thru the ceramic and wraps around the rivet on the front side where the green blotch is seen. Never having examined a switch up close I can only guess though. You might try cleaning the green area and see if it is corrosion or paint and if there is an end of the rheostat wire that is fastened under the terminal. If it is corrosion and has gotten under the rivet and terminal that could be a significant issue.

Another question would be which is the actual contact for the reading light. There is a small straight line which could just function as the locating tab which keeps the terminal from rotating on the ceramic or it could be that the same wiper that contacts the rheostat wire continues on to touch the metal and make that connection when the reading light is desired. The large round head of the rivet could also be the connection if the large portion of the wiper is also electrically active rather than just there to provide protection and tension for the actual wiper. It could be that both points are used due to the extra current needed for the reading lights. Without seeing the switch can not tell how the center connections to the power in terminal is made as to whether just the wiper is connecting or are both pieces together.

The reading light I am referring to would appear to be one or two lamp assys mounted directly under the edge of dash if this 39 six factory diagram is accurate. No idea if those were standard or optional so they might not be on your car or maybe was removed or connected in another way at some point.

I sort of suspect your switch wiper gets power similar to the later switches where the wiper rotates and a small protrusion on the wiper rides against the solid metal plate connected to the power in terminal. The solid plate on later switches corrodes or oxidizes and the extra resistance as the wiper tries to make contact is enough to lower voltage to the dash lights as if there was another section of resistance wire. That hard to access area is where Ross places the valve grinding compound and I would suggest you also examine that area on yours to see if it appears oxidized.

Attach file:



jpg  prewar instru light switch3.jpg (133.24 KB)
209_5dcd7a748def4.jpg 1179X694 px

jpg  prewar instru light switch4.jpg (132.07 KB)
209_5dcd7a819bffd.jpg 1196X680 px

jpg  reading light.jpg (176.30 KB)
209_5dcd7a8d47d80.jpg 558X886 px

jpg  later switches.jpg (20.19 KB)
209_5dcd7a9fe5399.jpg 291X322 px

Posted on: 11/14 8:05:33
_________________
Howard
Transfer the post to other applications Transfer


Re: dashlights dimmer switch
Home away from home
Joined:
2016/3/13 15:24
From Coalmont, B.C., Canada
Posts: 632
Geez Howard - you went to a lot of trouble for that reply - many thanks! I have a lot of points and tips to consider and I will get busy and see what I can figure out. Re those 'reading lights', I do have them on my car and they are on all the time if the lights are on. Hopefully if I can get all this sorted, I can get those switched and the dash lights dimming properly. I'll print the schematic you provided and start identifying which wires are which, and try and isolate the dash and reading light feeds. Thanks again for the detail and completeness of the response. I know I've said it before, but we're sure lucky to have you on this site, Howard. Chris.

Posted on: 11/14 17:52:38
_________________
'If you think you can, or you think you can't, you're right!' Henry Ford

1939 Six, Model 1700

http://packardinfo.com/xoops/html/modules/registry/index.php?Action=view&ID=1823
Transfer the post to other applications Transfer



« 1 (2)




[Advanced Search]


Search
Recent Photos
1936 120 (2019/11/26)
1936 120
1680 1120 (2019/11/2)
1680  1120
1680 x 1120 (2019/11/2)
1680 x 1120
56 Exewcutive Light Painting ... (2019/10/24)
56 Exewcutive Light Painting ...
56 Exewcutive Light Painting ... (2019/10/24)
56 Exewcutive Light Painting ...
Random Photo
1935 PACKARD ADVERT
Helping Out
PackardInfo is supported and funded by user donations. If you would to help out by either donating content, or funds to help with the upkeep and hosting of this site please EMAIL ME or click on the donate button.