Re: IML: '60 Imperial dome light stays on

["john sadowski" <jsadowski@xxxxxxx>]

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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