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'95 Interior Courtesy Lamps

compyelc4

Well-known member
Joined
May 1, 2002
Messages
607
Location
Dayton, Ohio
Corvette
'95 LT1 Coupe, Comp Yell; C6 Roadster, Vel Yell
My courtesy lamps work intermittently (lately, hardly ever). I have seen a post similar to this before. Someone suggested that the problem was a dirty switch. Another suggested a poor ground. I'm suspecting the ground because I removed both switches and ohmed them. They work fine. When I shorted the hot female (okay, cool it guys) contact ends together, nothing. I expected that.

I can manually activate the lamps from the headlight console, however. They work without a miss this way.

How can I find out where the switch grounds out on the chassis, so I can check it. Short of that, I am also suspected the "timed relay" thingy (you know, that is the device that delays the "on" state for about 30 seconds.

PS - All other electrics work fine!
 

Rabbit

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Joined
Dec 19, 2001
Messages
956
Location
sonoma ca usa
Corvette
2004 C5 coupe, MSGM & 2014 Cad SRX Crystal red
If your referring to the door ajar switches, they ground at the rear of the door near the latch. I would also cover the ambient light sensor with a piece of tape to see if that may be the problem?
 

compyelc4

Well-known member
Joined
May 1, 2002
Messages
607
Location
Dayton, Ohio
Corvette
'95 LT1 Coupe, Comp Yell; C6 Roadster, Vel Yell
Rabbit,

Yes, they are the door adjar swithches I refer to. I am aware of the sensor. I do cover it to make sure.

Funny thing. Last evening I opened the deck lid. I unlatched the rear shade and the lights came on. Just for grins I manually depressed the hatch door adjar switch thinking that switch might have something to do with the problem (what, I have no clue). I noticed that the more I depressed and released that swithch the more the lights activated. I shot some circuit cleaner into the switch and got to the point (after about 100 depresses) that the interior lights would come on and go fine. Problem solved right? I closed the hatch, opened the driver door, and sure enough, the lights came on. Problem really solved for sure, right? You know what's commin'! A few minutes later I returned to the garage to re-test my miracle cure.... no worky!

:r
 

Rabbit

Well-known member
Joined
Dec 19, 2001
Messages
956
Location
sonoma ca usa
Corvette
2004 C5 coupe, MSGM & 2014 Cad SRX Crystal red
Have you checked for CCM codes? They can tell if your courtesy lamp relays are ok.
 

compyelc4

Well-known member
Joined
May 1, 2002
Messages
607
Location
Dayton, Ohio
Corvette
'95 LT1 Coupe, Comp Yell; C6 Roadster, Vel Yell
Rabbit,

No I haven't. Was not aware of that. I will.
 

compyelc4

Well-known member
Joined
May 1, 2002
Messages
607
Location
Dayton, Ohio
Corvette
'95 LT1 Coupe, Comp Yell; C6 Roadster, Vel Yell
Rabbit,

Are CCM and ECM codes one and the same. If so, I do not see any type of code listing for light relays.
 

-=Jeff=-

Well-known member
Joined
Feb 2, 2001
Messages
909
Location
Bartlett, IL. (Chicago Suburb)
Corvette
1990 ZR-1
compyelc4 said:
Rabbit,

Are CCM and ECM codes one and the same. If so, I do not see any type of code listing for light relays.

No CCM and ECM are 2 different animals.. you need to look in the Helms manual the see how to access the Codes for the CCM. The CCM controls the light delay, Also I think the ground for those switches is near each passage for the wires going into the door on each side.. Basically on the kick panels
 

compyelc4

Well-known member
Joined
May 1, 2002
Messages
607
Location
Dayton, Ohio
Corvette
'95 LT1 Coupe, Comp Yell; C6 Roadster, Vel Yell
Jeff,

Thanks. I'll do some poking around.

BTW, I love that black stripe down the center of your vette! Did you have that done?
 

-=Jeff=-

Well-known member
Joined
Feb 2, 2001
Messages
909
Location
Bartlett, IL. (Chicago Suburb)
Corvette
1990 ZR-1
compyelc4 said:
Jeff,

Thanks. I'll do some poking around.

BTW, I love that black stripe down the center of your vette! Did you have that done?

Yes, when I had the body update done I had the car repainted white and had the stripe painted on as well. even the little 1/4" pinstripe is painted on
 

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