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#2458942 - 02/28/18 01:21 PM Time delay relay for lignition key.
fastmark Offline
master

Registered: 01/20/03
Posts: 4636
Loc: Abilene, Texas
The relay that times the title light, key, etc is availed on eBay nos. But I was looking for a cheap source or even new technology timer that could be substituted. Any ideas?


Edited by fastmark (02/28/18 01:23 PM)

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#2459026 - 02/28/18 04:24 PM Re: Time delay relay for lignition key. [Re: fastmark]
PLUM_72 Offline
super stock

Registered: 01/21/03
Posts: 1130
Loc: Chicago, IL
While I am no electronics expert, I would imagine this "timer" is really nothing more than a capacitor. Stores energy while the circuit is powered and burns off the energy lighting the light when the power is off. Once the available energy in the capacitor is gone the light goes off.

Where the expertise is needed is sizing the capacitor to do what you want it to do.
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1972 Dodge Challenger

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#2459031 - 02/28/18 04:35 PM Re: Time delay relay for lignition key. [Re: fastmark]
PLUM_72 Offline
super stock

Registered: 01/21/03
Posts: 1130
Loc: Chicago, IL


Edited by PLUM_72 (02/28/18 04:39 PM)
_________________________
1972 Dodge Challenger

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#2459063 - 02/28/18 05:59 PM Re: Time delay relay for lignition key. [Re: fastmark]
71birdJ68 Offline
master

Registered: 02/09/12
Posts: 3955
Loc: Morristown Tn.
It's just a capacitor, is something wrong with the one you have?

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#2459076 - 02/28/18 06:35 PM Re: Time delay relay for lignition key. [Re: fastmark]
JS Restorations Offline
enthusiast

Registered: 01/13/08
Posts: 361
Loc: Pittsburgh, PA
The original module from the factory did not use a capacitor at all. It was just a thermal driven device. Think of it as a one shot 552 turn signal module. Once the door would open creating a ground, the winding on one blade would heat up, flex toward the other blade, make contact and light the key light, map light, etc. Door shuts, blade cools down in thirty seconds or so pulls away and breaks contact. Bulbs turn off. Simple as that.







Jim
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PM's turned off. Please use my email address: jsrestorations@rocketmail.com

Marriage is the most expensive way to get your laundry done.

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#2459098 - 02/28/18 07:18 PM Re: Time delay relay for lignition key. [Re: fastmark]
fastmark Offline
master

Registered: 01/20/03
Posts: 4636
Loc: Abilene, Texas
On mine, the post with the heating element and the insulation sock broke from of its weld.

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#2459660 - 03/01/18 08:34 PM Re: Time delay relay for lignition key. [Re: fastmark]
screamindriver Offline


Registered: 02/14/04
Posts: 7096
Loc: Harrisburg, Pa.
It was used in a wide range of vehicles from the 70s through the 80s including vans...I've got a whole bag of them from going to the boneyard..It's easier to simply replace it with another one and not worry about it for years to come...

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#2459838 - 03/02/18 08:08 AM Re: Time delay relay for lignition key. [Re: screamindriver]
fastmark Offline
master

Registered: 01/20/03
Posts: 4636
Loc: Abilene, Texas
Originally Posted By screamindriver
It was used in a wide range of vehicles from the 70s through the 80s including vans...I've got a whole bag of them from going to the boneyard..It's easier to simply replace it with another one and not worry about it for years to come...


I just came to that conclusion. I pull a real nice one out of a low mileage 69 NYer from my parts car collection. Looks like I’ll hit the wrecking yard to see what’s left.

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#2460249 - 03/02/18 09:06 PM Re: Time delay relay for lignition key. [Re: fastmark]
screamindriver Offline


Registered: 02/14/04
Posts: 7096
Loc: Harrisburg, Pa.
Originally Posted By fastmark
Originally Posted By screamindriver
It was used in a wide range of vehicles from the 70s through the 80s including vans...I've got a whole bag of them from going to the boneyard..It's easier to simply replace it with another one and not worry about it for years to come...


I just came to that conclusion. I pull a real nice one out of a low mileage 69 NYer from my parts car collection. Looks like I’ll hit the wrecking yard to see what’s left.
IF you don't have any luck PM me and I'll pull one or two out for you from my lifetime supply...

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#2460393 - 03/03/18 07:58 AM Re: Time delay relay for lignition key. [Re: screamindriver]
fastmark Offline
master

Registered: 01/20/03
Posts: 4636
Loc: Abilene, Texas
Originally Posted By screamindriver
Originally Posted By fastmark
Originally Posted By screamindriver
It was used in a wide range of vehicles from the 70s through the 80s including vans...I've got a whole bag of them from going to the boneyard..It's easier to simply replace it with another one and not worry about it for years to come...


I just came to that conclusion. I pull a real nice one out of a low mileage 69 NYer from my parts car collection. Looks like I’ll hit the wrecking yard to see what’s left.
IF you don't have any luck PM me and I'll pull one or two out for you from my lifetime supply...


Thanks for the offer.. I found a couple of them on some junk wiring harnesses I have saved so this will get me out of my immediate spot. I need to go to the junk yard anyway for some other parts anyway.

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