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Username Post: Courtesy light and Jamb question 1967 impala        (Topic#353805)
Mja1975 
Silver Supporting Member
Posts: 278
Mja1975
Age: 43
Loc: San Jose , Ca
Reg: 06-28-12
11-07-18 08:25 PM - Post#2750736    

Hello,
I am and working out a few electrical bugs. I have a 67 2 door hard top. Attached are links to some pictures. The white wires are grounds correct? When I put a bulb in the courtesy sockets the white wires will show 12 volts I am thinking cause they not properly grounded sound right?

The current jamb switch I have is two prong is this ok. Originally would the two white wires be spliced together.

And lastly was the original jamb switch connector male/female?

Thanks!!!!

https://beta.photobucket.com/u/Mja19751/p/b58eec71 ...

https://beta.photobucket.com/u/Mja19751/p/e7ecbbec ...

https://beta.photobucket.com/u/Mja19751/p/19ec32ed ...




1967
307
400 Turbo


Edited by Mja1975 on 11-08-18 09:43 PM. Reason for edit: No reason given.

 




68SS427 
Contributor
Posts: 238

Loc: Connecticut
Reg: 12-01-07
11-08-18 06:16 AM - Post#2750749    
    In response to Mja1975

The white wires are the ground return from the switches. The reason you are seeing 12 volts on the white wire is that the orange wire has 12v + on it all the time and you are seeing voltage thru the bulb, Remove the bulbs and the white wire voltage will go away. The single contact switch goes in the passenger door side and the two-contact switch goes in the driver's door jamb. That looks like the correct switch for the pass side

Don S.
1968 SS427 x 4
1968 Impala L-72
1969 Chevelle SS396


 
Custom670 
Poster
Posts: 25
Custom670
Reg: 09-01-12
11-08-18 06:28 AM - Post#2750750    
    In response to Mja1975

If you have two connectors on your jamb switch one is for the courtesy lights above the door (or a dome light) and the second is for the lights under the dash. One of those two wires is part of the wiring harness behind or under the dash, and the lights may be operated by a separate switch as well as by opening the door. The door jamb switch is self grounding.



 
Mja1975 
Silver Supporting Member
Posts: 278
Mja1975
Age: 43
Loc: San Jose , Ca
Reg: 06-28-12
11-08-18 08:48 AM - Post#2750761    
    In response to 68SS427

Ok, the two prong jamb pictured is from the passanger side. The wires pictured are from drivers side they were spliced together with female spade connector blue aftermarket. I haven't pulled the drivers side jamb yet just glanced behind I believe I saw two prong. Any ideas?

Thank you for replying.

1967
307
400 Turbo


 
Mja1975 
Silver Supporting Member
Posts: 278
Mja1975
Age: 43
Loc: San Jose , Ca
Reg: 06-28-12
11-08-18 08:54 AM - Post#2750762    
    In response to Custom670

Ok so each prong is a ground for under dash courtesy lights the other is for above the window lights.

1967
307
400 Turbo


 
Mja1975 
Silver Supporting Member
Posts: 278
Mja1975
Age: 43
Loc: San Jose , Ca
Reg: 06-28-12
11-08-18 09:05 AM - Post#2750765    
    In response to Mja1975

Just a little history. Since Ive owned this car about 5 years now. The courtesy lights have not worked. I put a bulb into the light socket above the windows the light lit up I thought ok great. After a few moments i saw a hint of smoke from the head light Switch immediately pulled bulb smoke went away. Investigated a bit a found under dash the white wires (grounds) driver and passanger side where not attached and just stuffed behind kick panel. Lights not being grounded could cause the smoke I seen correct?

1967
307
400 Turbo


Edited by Mja1975 on 11-08-18 09:44 PM. Reason for edit: No reason given.

 




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