i need a 12VDC relay with time delay

i know there are some automotive relays that have internal delay circuits, such that the load contacts do not open until some time after the control signal is removed.

what i need to know is the year / make / model for some OE applications of these, so I can scout some out in the junkyard.

as an example, there's one used for some AC function on some VW and Audi, (1998 - 2005 Passat and others?), identified by "384" on the top.  the PN for that one is 8D0 919 578 A.  it's an odd 6-pin design but i could make it work if i had to.

then there's a Hella part that cross-references to a Mercedes part number 2219066600, but i can't find the original application.  this part also crosses to Volvo PN 15223967, but again i can't find an OE application.

https://www.summitracing.com/parts/hla-996152131?seid=srese1&gclid=CjwKCAiA-bmsBhAGEiwAoaQNmslBB4KlGKjBJJyKMcEEQU26LBNA7wK-rPzBPp6ZA66JsH07P9nLDxoCLV8QAvD_BwE

Plug your part numbers into theRockauto part number search. You can get the applications from there.

L5wolvesf said:

Plug your part numbers into theRockauto part number search. You can get the applications from there.

I did that before I posted here. No specific application found for the Hella.

Volvo part number references to the L28F Skid Steer Loader.

https://avspare.com/spare/volvo.heavy/voe15223967/

98 to 2005 Passat and Audi A4

Stampie said:

Volvo part number references to the L28F Skid Steer Loader.

https://avspare.com/spare/volvo.heavy/voe15223967/

Look at Stampie flexing his Google!

In reply to AngryCorvair (Forum Supporter) :

I know you older people have problems using the internet sometimes so I like to help when I can.

Roll your own with a 555 IC and a normal relay?

https://www.jameco.com/Jameco/workshop/TechTip/555-timer-tutorial.html

Stampie said:

Roll your own with a 555 IC and a normal relay?

https://www.jameco.com/Jameco/workshop/TechTip/555-timer-tutorial.html

Nope, not me, not in this application.

https://www.amazon.com/Small-Timer-Delay-Relay-Cycling/dp/B07C4ZP23D?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A1YGHK4VRDPUC4

https://www.ebay.com/itm/373687383647?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20201210111451%26meid%3D59eec5d4253e4fab9140305d5d5944f3%26pid%3D101196%26rk%3D1%26rkt%3D3%26sd%3D364170896959%26itm%3D373687383647%26pmt%3D1%26noa%3D0%26pg%3D4429486%26algv%3DSimplAMLv5PairwiseWebWithBBEV2bAndUBSourceDemotionWithUltimatelyBoughtOfCoviewV1%26brand%3DBrand&_trksid=p4429486.c101196.m2219&amdata=cksum%3A37368738364759eec5d4253e4fab9140305d5d5944f3%7Cenc%3AAQAIAAABMPzGgyhK8D4QCApcBuWVQe1qsoN395NgJVWTF7eo2rfipPwdfCio0EI4F5H%252Bx0wtS8%252Fu%252Fr%252FRUxEZ1KxNtbAGuwQqNawa9Mz45LW45pYy0nujLIXBftIR189x2Xgv%252F%252FMHkziIVR6iwYPc5tC7jtfhHL0WlUYcbko4Jpc%252BIPw44wOAmdiMfS783SbaJnphqufp9KzuY16ChyavAJb7mfk%252F5iMjxyOLIKmMlg339ortdF9Fzs8Kcl05U0fMCwc7SIwsnyYIrk8JwHTRq%252FtBUuCRJlLGsKDq%252Bdyr8GkxlgsJ1rmySjFOpbEx56TOHzVMH7psapFRq4naEDDn1FJJcOqtOKkSxeXZ%252FogZPVOT9pjJbM3v9YpWMn2kKothRQgueGkYZ1mUGkIJ9bu4xo8D0dRhmpE%253D%7Campid%3APL_CLK%7Cclp%3A4429486

For just a few bones you can get an adjustable one.  Seems easy.  

Look at older automatic antennas. Or maybe cars with automatic shoulder belts - did those have time delays? I think so.

How long a delay are you looking for? What are you doing?

I have used the John Deere wzw1589. 0/900s 12v 30a made by Hella so you can probably cross reference from there. Overkill for what I needed since each device used 2a tops. Big problem I had was about half the parts I ordered were bad fakes that were falling apart. Now I just buy potted relay modules but they cost a fortune

ralleah said:

How long a delay are you looking for? What are you doing?

I think about 60 seconds would be sufficient, but I'd like to be able to tune it. This will be to let the bilge fans on my header boxes run for a bit after engine shutdown. Draw is about 6A total. If I used an external timer I could put it on the control side of existing relay, so current draw shouldn't be an issue with that 5A device linked above.

That sounds a lot like a turbo timer.

buy a 4pk for lower unit cost, and so you have spares, comes in at <$5/per:

https://www.amazon.com/dp/B0CNCY9N7K/ref=sspa_dk_detail_2?psc=1&pd_rd_i=B0CNCY9N7K&pd_rd_w=enq9K&content-id=amzn1.sym.0d1092dc-81bb-493f-8769-d5c802257e94&pf_rd_p=0d1092dc-81bb-493f-8769-d5c802257e94&pf_rd_r=5J77Q5SJGVP14EKYEV4X&pd_rd_wg=2DDex&pd_rd_r=443331b6-2825-441c-8144-56a436a09b10&s=automotive&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWwy

matthewmcl said:

That sounds a lot like a turbo timer.

my car is not turbocharged.

;-)