AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) GRM+ Memberand MegaDork
12/29/23 3:17 p.m.

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

 

L5wolvesf
L5wolvesf Dork
12/29/23 3:42 p.m.

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

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) GRM+ Memberand MegaDork
12/29/23 5:21 p.m.
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.

Stampie
Stampie GRM+ Memberand MegaDork
12/29/23 6:34 p.m.

Volvo part number references to the L28F Skid Steer Loader.

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

Noddaz
Noddaz GRM+ Memberand PowerDork
12/29/23 6:38 p.m.

98 to 2005 Passat and Audi A4

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) GRM+ Memberand MegaDork
12/29/23 6:41 p.m.
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!

Stampie
Stampie GRM+ Memberand MegaDork
12/29/23 6:45 p.m.

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.

Stampie
Stampie GRM+ Memberand MegaDork
12/29/23 6:53 p.m.

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

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

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) GRM+ Memberand MegaDork
12/29/23 8:06 p.m.
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.

93gsxturbo
93gsxturbo UltraDork
12/29/23 9:43 p.m.
Robbie (Forum Supporter)
Robbie (Forum Supporter) GRM+ Memberand MegaDork
12/29/23 9:52 p.m.

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

ralleah
ralleah PowerDork
12/29/23 10:18 p.m.

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

Ojala
Ojala GRM+ Memberand Dork
12/30/23 12:08 a.m.

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

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) GRM+ Memberand MegaDork
12/30/23 10:46 a.m.
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.

matthewmcl
matthewmcl Dork
12/30/23 10:58 a.m.

That sounds a lot like a turbo timer.

ralleah
ralleah PowerDork
12/30/23 2:31 p.m.
AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) GRM+ Memberand MegaDork
12/30/23 6:09 p.m.
matthewmcl said:

That sounds a lot like a turbo timer.

my car is not turbocharged.

;-)

You'll need to log in to post.

Our Preferred Partners
DxABc0iTr2QZTJ5SiOVDblzJ8UatPSyvIAK00t7h87Mx5vV1arvP9V2mTUbrEM5c