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Time Delay Relay Gets Very Hot #1405578 03/20/13 07:48 PM 03/20/13 07:48 PM
Joined: Dec 2008 Posts: 109 Texas K Knappy OP member
Knappy OP member K Joined: Dec 2008 Posts: 109 Texas	Does anyone know if the time delay relay is suppose to get hot? I am putting a factory system in my 71 Challenger and it gets very hot while the door is open. Does not seem right. 68 Coronet R/T Hemi 70 Challenger 440-6 70 Challenger R/T S/E 440-6 71 Challenger Convert. 70 Superbird 440-6

Re: Time Delay Relay Gets Very Hot [Re: Knappy] #1405579 03/20/13 07:55 PM 03/20/13 07:55 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Normal.... The timer is a bimetallic strip, two metals which expand at a different rate are bonded together, the dissimilar rate causes the the strip to curve as the metals expand... A contact point is attached to the strip so when the strip bends the points open, the circuit loses continuity... If you leave a door ajar the switch is bypassed but current still flows so the unit gets hot... "The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."

Re: Time Delay Relay Gets Very Hot [Re: 1_WILD_RT] #1405580 03/20/13 10:15 PM 03/20/13 10:15 PM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	I agree its normal to get a little hot. I worked with a few over the years. Ron

Re: Time Delay Relay Gets Very Hot [Re: 383man] #1405581 03/20/13 11:57 PM 03/20/13 11:57 PM
Joined: Dec 2008 Posts: 109 Texas K Knappy OP member
Knappy OP member K Joined: Dec 2008 Posts: 109 Texas	I'm still not sure how they work. Seems like when the door is opened the relay will activate and keep the lights on for awhile. Then it cools off and the lights go out Is this right 68 Coronet R/T Hemi 70 Challenger 440-6 70 Challenger R/T S/E 440-6 71 Challenger Convert. 70 Superbird 440-6

Re: Time Delay Relay Gets Very Hot [Re: Knappy] #1405582 03/21/13 12:20 AM 03/21/13 12:20 AM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	No, the heating up is what turns the lights off, but leaving the door open means it heats up longer than normal & when you close the door the lights go out immediately.. "The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."

Re: Time Delay Relay Gets Very Hot [Re: Knappy] #1405583 03/21/13 12:29 AM 03/21/13 12:29 AM
Joined: Oct 2008 Posts: 765 Shoreline, Washington 72roadrunnergtx super stock
72roadrunnergtx super stock Joined: Oct 2008 Posts: 765 Shoreline, Washington	Ignition switch lamp time delay relay? Controls a single light bulb that illuminates the ignition lock/switch for a short period of time after the driver�s door is opened then closed. The door switch provides a ground for the heating element that closes a circuit for the lamp, when door closes, ground goes away, contacts open after bi-metal strip cools off, 60-90 secs later. 1972 Road Runner GTX 440 6bbl 5-speed [img]http://72rrgtx.com/carpics/bucket/DSC06730r-1.jpg[/img]

Re: Time Delay Relay Gets Very Hot [Re: 72roadrunnergtx] #1405584 03/21/13 12:36 AM 03/21/13 12:36 AM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Quote: Controls a single light bulb that illuminates the ignition lock/switch for a short period of time after the driver�s door is opened then closed. On most cars it actually lights up the headlight switch & the ignition switch.. "The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."

Re: Time Delay Relay Gets Very Hot [Re: 1_WILD_RT] #1405585 03/21/13 12:52 AM 03/21/13 12:52 AM
Joined: Oct 2008 Posts: 765 Shoreline, Washington 72roadrunnergtx super stock
72roadrunnergtx super stock Joined: Oct 2008 Posts: 765 Shoreline, Washington	Quote: On most cars it actually lights up the headlight switch & the ignition switch.. Stand corrected, looks like an additional �switch title lamp� for the e-bodies, b-bodies these years, single lamp. 1972 Road Runner GTX 440 6bbl 5-speed [img]http://72rrgtx.com/carpics/bucket/DSC06730r-1.jpg[/img]

Re: Time Delay Relay Gets Very Hot [Re: 72roadrunnergtx] #1405586 03/21/13 12:54 AM 03/21/13 12:54 AM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Quote: Quote: On most cars it actually lights up the headlight switch & the ignition switch.. Stand corrected, looks like an additional �switch title lamp� for the e-bodies, likely others. B-bodies these years, single lamp. Score E bodies 1, 71 & up B Bodies 0..... "The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."

Re: Time Delay Relay Gets Very Hot [Re: 1_WILD_RT] #1405587 03/21/13 01:03 AM 03/21/13 01:03 AM
Joined: Dec 2008 Posts: 109 Texas K Knappy OP member
Knappy OP member K Joined: Dec 2008 Posts: 109 Texas	So the process of opening the door is what activates the relay then when the door is closed it turns off and it cools down and the lights go out in about 30 sec. 68 Coronet R/T Hemi 70 Challenger 440-6 70 Challenger R/T S/E 440-6 71 Challenger Convert. 70 Superbird 440-6

Re: Time Delay Relay Gets Very Hot [Re: Knappy] #1405588 03/21/13 01:43 AM 03/21/13 01:43 AM
Joined: Oct 2008 Posts: 765 Shoreline, Washington 72roadrunnergtx super stock
72roadrunnergtx super stock Joined: Oct 2008 Posts: 765 Shoreline, Washington	Basically correct, however timing was/is not precise by any means. 1972 Road Runner GTX 440 6bbl 5-speed [img]http://72rrgtx.com/carpics/bucket/DSC06730r-1.jpg[/img]

Re: Time Delay Relay Gets Very Hot [Re: 72roadrunnergtx] #1405589 03/21/13 03:01 AM 03/21/13 03:01 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: Quote: On most cars it actually lights up the headlight switch & the ignition switch.. Stand corrected, looks like an additional �switch title lamp� for the e-bodies, b-bodies these years, single lamp. I did not repair many E-bodies over the years but most of the cars I remember had just the ign switch lite from what I can remember. Its the little round cylinder thermal relay. But you guys are right as to how it works. Ron Last edited by 383man; 03/21/13 03:04 AM.

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