Black Box Under Dash

[Crippin87]

Does anyone have a schematic for the plugs not used in this black box located under the dash? I’m looking to see if anyone has a diagram of what the pins are like ground, ignition, constant, etc. any help is appreciated!

 

[adriver]

99-02 pinout is different from 03-06

Start here, 03-06. These are from the pickups, but they should be the same. Its simple enough you can verify with a multimeter.
https://www.silveradosierra.com/how...the-mbec-for-powered-accessories-t629778.html



For 99-02






I want to say the difference on the 99-02 connector between pins A & F, (both hot at all times), was either 10A and 20A or 15A and 30A. I don't remember where, but IIRC I used the circuit number 2240/2340 to figure it out. If you find the fuse, you can pull it out and see.

 

[Crippin87]

99-02 pinout is different from 03-06

Start here, 03-06. These are from the pickups, but they should be the same. Its simple enough you can verify with a multimeter.
https://www.silveradosierra.com/how...the-mbec-for-powered-accessories-t629778.html



For 99-02


View attachment 211104
View attachment 211105


I want to say the difference on the 99-02 connector between pins A & F, (both hot at all times), was either 10A and 20A or 15A and 30A. I don't remember where, but IIRC I used the circuit number 2240/2340 to figure it out. If you find the fuse, you can pull it out and see.

Exactly what I was looking for thank you!!!

 

[adriver]

Heres the connector on ebay..

https://www.ebay.com/itm/1999-2006-...h=item33c859ce9d:g:194AAOSwax5YnPyd:rk:1:pf:0


This seller (MCASNOW) sells the connectors with six short wires currently for $26. I bought one in the past, and it worked fine. I didn't bother to ask if they would just send the connectors without crimping them when I got mine. The description sounds like they send them separate, but not certain. Maybe you can get them to send you a few extra terminals just in case. You can find the crimp terminals on amazon for cheaper.

(Had these in my cart for later)
https://www.amazon.com/gp/product/B0040CVW42/ref=ox_sc_saved_title_8?smid=A1E9SA3NK9WU6R&psc=1

Not sure if you want to resell, or donate to the forums. Maybe you go to shows or something or know some people local. HOWEVER, When I was searching I wasn't able to find the plastic connectors elsewhere.


Last, not sure if this is for you or not, but anyone else who searches for this, I got this pic off that seller.



You can see that they have Circuit NO. 2340 listed as 30 AMPs on the 2003+. That's the same circuit NO. listed on the 99-02. You might want to keep searching or not, but that should help a little more.




This was listed on that link. Its a



1 = C - IGN
2 = D - ACC
3 = B - NOT USED
4 = E - HOT
5 = A - HOT
6 = F - GROUND

 

[HiHoeSilver]

This should be a sticky.

 

[adriver]

This should be a sticky.

Just in case, there's a little more I can add to help with this.



Heres the connector part # 12193930
These were originally Delphi connectors, but Delphi is now APTIV

http://ecat.aptiv.com/feature?search=12193930
https://www.aptiv.com/suppliers
http://www.terminalsandconnectors.com/Products/Product/12193930
http://www.nusourcetech.com/linecard/Delphi/12193930.php
http://www.1sourcecomponents.com/search/search.htm?base=12193930
https://www.asapsemi.com/rfq.aspx?id=12193930&mfr=delphi
https://www.asap-ittechnology.com/quote/delphi-connection-system/12193930/
https://www.asap-distribution.com/connector/rfq/delphi-fci-automotive/12193930/
http://www.just-connectors.com/rfq/delphi/12193930/

If you need more sites than that, www.google.com

I found an old write up, that listed mouser, but they are out of stock, and I have not tried to order from any of these links. If anyone tries to order from them, help others by posting up what happened. The one site that is out of stock (Mouser, which is probably out of stock from being listed as the option from another MBEC write up), had them listed at $1.32 each and you could buy one. I have no idea if any of these other sites have a minimum purchase amount, or how much for each. My suggestion if you have to buy lets say a minimum of 25 or 50, would be to also buy enough terminals to include 8-10 each loose and uncrimped, (they are cheap enough in bulk, and easier to find then the connector). Buy some padded mailers, and see how many stamps you need (probably two), and sell them on here cheap. It would probably cost you $2-$3 total shipped. You could put an ad on here (and a Silverado website or two), then sell them for $5 or $10. Link the write up, and this is brought up enough, I would think you could sell them quick with most people buying them just to have this option for the future in case they come up with something.



The pinout is different from the 99-02 to 03-06/07 classic, (and NBS is the only one that uses this connector), but its the same connector and terminals for all NBS years.


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[Crippin87]

I went to the local junkyard today And I was able to find one 04-06 donor nbs. I pulled the factory plug, I’m going to plug it in and splice the wires when I get the time and see if it works. If it does (like it should) it will be a pretty big win consti picked it up for $2!