I think I possibly have a problem with my interior lights timer. When car is running, door opens, lights come on. If I close the door with engine running, lights turn off. If I leave doors shut and shut off engine, lights are off. Then once I open door, lights come on. Then I shut the door and the lights do not go off. They ran all night and killed my battery. They work fine as long as engine is running. Once I shut the engine off and open the door, they will not shut off. What is the problem, and what can I do to fix it? Thanks!

 

ttt

that's a little different than mine (87) acted when the timer went out, I see yours is an 86-actually yours sounds a little freaky-but, you might want to double check the door switches first-you may have a sticky one, second-take a good look at how your key position looks(from the outside make sure your key slot is vertical-not off to an angle) and third-the timer switch has been discontinued-but my understanding is any GM timing switch from say 85-89 will work-if you can find one-I also thought someone did a tech tip on this-haven't looked.Good Luck.

 

Yeah, I checked the tech tips already. I could not find anything. As for the door switches, I asume they are good. As I said, if I start engine, and then open each door and close each door, the lights come on and go out as they should. It is only when the car is off and key out that I have this problem. I pulled the courtesy fuse for the time being, but it has me freaked out. I did a search with no results. I only found posts about someones lights not coming on at all, which is the opposite for me. Mine won't go out. The dimmer switch works fine too. Again, lights only stay on after car is off, key out. Could my timer module be causing this problem, or something else?

 

Mine ended up being the timer-killed my battery twice-so I too pulled the fuse-replaced the door switches-finally took it to a vette shop-timer on mine-another guy out here took his to another vette shop-door lock on his-from what I remember.I think some guy did a write up on how to bypass the timer-don't remember-hey I printed it for my book
check this forum thread-http://forums.corvetteforum.com/zerothread?id
=776172

Hope its still there-otherwise just email me.

 

 

It was mentioned on the first post, but check your lock and the key position. On my 92, I killed the battery a couple of times when the lights didn't shut off because I found the key would remove from the lock cylinder even when it wasn't quite verticle, and that didn't complete the circuit to engage the timer cycle to shut the lights off automatically. All it takes is being careful to have the lock postioned verticle when I remove the key.

 

Yeah I know its not that. The key is verticle as it should be.

 

OK, if you're looking for the part it is 85-87 #10098435. it's a little sucker and hard to get at!!! Couldn't you pull up the thread???

 

Check www.Corvettesdownunder.com they have have a fix for your timer under their Corvette Tech section. You cannot buy a new timer as General Motors discontinued it and tome out functions are now handled by the CCM.
Jerris

 

No, it was not an actual link so I was not able to just click on it. I tried the copy and paste thing and it didn't work.

 

I tried that page, and it seems to be a bad link. Are you sure you spelled it right? It says page can not be displayed.

 

I did a forum search and found the site in another post. It is http://www.corvettesdownunder.com.au/


Thanks!

 

Sorry I left off the .au
Jerris

 

No problem. It seems that the tech tip on there refers to people who have a problem with the timer module not allowing the lights to come on when the door opens, which is the exact opposite of mine. Thanks for the help though.

 

Just read my email-the date on the following thread is 3/16/04, I'll re-post it for you but don't know how long these post stay in the archives,
I print off most posts that address unique problems and add them to a book I keep-so if you can't pull the post let me know and I can always fax it to you.

http://forums.corvetteforum.com/zerothread?id=776172

 

I just tried the post I suggested and it came up page cannot be found.
Two of our members Lionsden and korvette4u gave some great write ups-don't know if their still members.But, I read the post again-which I printed for my book and can fax it to you if needed. The post actually was "can the delay module be replaced or bypassed". Now here's what I think MAY BE your problem-since the module seems to funtion in some respect-there is a relay in the circuit-and perhaps it's sticking-hope you have the factory service manuals.BTW, korvette4u said it's a common horn relay P/N NC 502, JUST remember this discussion was about years 85-87, so yours maybe different.

 

the achives are gone

 

Could you maybe email it to me? Where would this relay be located? I do have a GM service manual. What do you think I should try next?

 

Might I suggest, in order to resolve if it is the timer, that you bypass it and see if that fixes your problem. There are two wires, who colors i can't recall, that you just jump, and then the lights will come on, but without the timer function. I think the colors of the wires are in a tech tip , as others have suggested. If you bypass, and still have the problem you state, it is not the module. If that is your problem, you may want to leave it by-passed. I did that to my 84. It is cheaper than getting the parts to fix it. It is also possible that your lock is buggered up, and not engaging your timer, as others have stated. If so, this by0pass will allow you to narrow down possible problems. As far as door switches go, I doubt that is the problem, but hey...ya never know. A word of caution about the door switches. I don't know about the newer vette's, but on my 84, if the wires fall inside(they can real easy if your not careful), they are a pita to get back out! Let us know what you find.

 

Do you have a fax I can send a copy of the post to? as long as you're in the USA. Re-reading this post several times by korvette4u and Lionsden, I'm a little confused myself-right side of print kinda cut off. I also believe Hooked on vettes might have done some kinda write up-I can't find a relay in my schematics-and I believe the timer module was replaced with a simple horn relay because the timer modules are damn near impossible to find.This is a direct quote from korvette4u-

"yupper she's a learning experience....i thank you for your time...now then for model years 85-87 there is a timer delay module pn#10098435...the module is wired:
"A" White wire goes to all lamps
"B" Black is Ground. Shorting White to Black will turn the lights on.
"C" Pink?White is 12 volts from the Ctsy/Clk fuse which is hot all the time.
"D" 2 White wires come from the Door switches. The switches close when the door is open and provides a ground on the White wire/wires depending on what door is open
"E" is the reset signal used by the delay module to turn the module off
when you turn the ignition key to on. So the lights go off...You don't need to worry about that wire.

now to replace it: to following has been suggested...thanks to Hooked on (can't read the rest, but I think it's vettes) believe he's still here.

Primary of relay
Pink?white--ooo--White wires
Secondary Thick White wire---Black..

then to new relay: P/N NC 502 (common horn relay)

Pink?white to pin#85
2 White wires to pin#86
Secondary Thick White wire to pin #30
Black to pin #87"

Don't know if this helps-