Re: IML: '60 Imperial dome light stays on
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Re: IML: '60 Imperial dome light stays on



If I'm not mistaken, the door switches are self setting when they are first installed. What I mean is that the pin usually sticks out further then need be. When the door is closed for the first time, the pin sets itself to the proper depth.
John
----- Original Message ----- From: "Joe Strickland" <jwstrick426@xxxxxxxxxxxxxx>
To: "Imperial Mail List" <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Friday, June 01, 2007 12:26 PM
Subject: IML: '60 Imperial dome light stays on


From: "Rob van der Es" <R.vdes@xxxxxxxxxxxxxxx>
Robert;

After your reply I decided to investigate some more. I have a '62 and it operates just like the '60 models. I am sure the wiring is the same. The back doors operate the overhead dome light and there is a switch on the left side headliner that activates it manually.
My car has been sitting for years and does not even have a battery in it. 
I bought new 1004 lamps and replaced the map light and the dome light.  I 
connected 12VDC to the battery leads from a power supply I have.  To my 
surprise the dome light in my car also was on continually. I discovered 
that the right hand automatic switch near the bottom of the center pillar 
was the culprit.  I was able to push it in by hand and make the dome light 
go off with the door open.  When the door was closed, the dome light 
remained on.  I found that if I folded the paper from the new 1004 lamps 
twice and placed it between the front edge of the rear door and the 
automatic switch button/pin that it would go off. What that means is that 
the automatic switch is not touching the metal of the front part of the 
rear door enough to make it open up, thereby breaking the ground of the 
dome lamp.  A cure for this would be to remove the automatic switch (it 
un-screws)and place one or more metal washers between the nut head of the 
switch and the metal of the center pillar.  Either the head of the 
automatic switch pin has worn down or else the door hinges have developed 
enough play that the automatic switch no longer causes the dome lamp to go 
off.
I traced out the circuit in the service manual.  It is difficult to follow 
since it is scattered on two separate pages.  I am working on a single 
page schematic that shows both the dome light and map light circuits if 
you are interested.  Both the map light and the dome light are fed by a 9 
amp fuse in the fuse box.
It also turned out that the '62 Imperial electrical schematics were in 
error by not showing the connection from the dome lamp to the instrument 
panel and fuse block wiring, although we know the connection exists! The 
'62 Chrysler schematic does show the interconnection to the instrument 
panel wiring on those models.  someone in the Chrysler/Imperial 
documentation group was asleep on that issue.
From previous experience I found that the automatic switches for dome/map 
lamp circuits can be worn enough that the insulation that opens the 
circuit when the pin is depressed that it won't always open the lamp 
circuits up.  When that is the case, the only solution is to replace the 
automatic door switch.
As part of my investigation I discovered that my'62 map light switch had 
come apart and I am having to locate a replacement.  The map light works 
OK by opening the doors, but the manual switch has come completely apart 
inside the dash area.
Joe Strickland


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