PWM cooling fan(s) control using ECM

[parsonsj]

The AC-Delco pn is 15-80803 if that means anything.

[parsonsj]

I talked with a local tech today who does a lot of late model upgrades. He said that on C6s they routinely swap to dual Spal fans and get another fan controller and split the signal line from the ECM with great results.

So it seems a single controller with dual fans and dual controllers splitting the signal both work fine.

[samckitt]

Originally Posted by parsonsj

I have found this site.

http://www.obd2allinone.com/sc/details.asp?item=m5j3

Looks like you can pick up the connectors there. 10 / $2.95.

Here is another site to get the terminals from:

http://www.eficonnection.com/eficonn...spx?ItemId=314

Downside is you have to have a $25 minimum order.

[JMitch19]

Originally Posted by samckitt

Here is another site to get the terminals from:

http://www.eficonnection.com/eficonn...spx?ItemId=314

Downside is you have to have a $25 minimum order.

mouser.com also has the ecm terminals. A lot of sites call them Delphi connectors but they are really molex. The molex pn is 33467-0005 minimum quantity 1.

http://www.mouser.com/ProductDetail/...TgQDO3tTBTM%3d

[parsonsj]

Excellent! Can you find the cavity plugs? I just spent 5 minutes on Mouser without any luck...

[JMitch19]

Originally Posted by parsonsj

Excellent! Can you find the cavity plugs? I just spent 5 minutes on Mouser without any luck...

Most of the the work that I have done has been will GM's E38 ecm. Below are the two connectors for the E38. They don't seem to list a cavity plug at all. I have completely stripped a few factory GM harnesses any I've never seen a cavity plug in a factory setup either. There is a build in seal in the connector that seals around the wire when you insert it. The wire openings in this seal are very small. You could just cut up some scrap 20/22 gauge wire and insert it in the unused spots.

http://www.molex.com/molex/products/...P_HOUSINGS.xml

http://www.molex.com/molex/products/...xml#partdetail

[parsonsj]

No, there's a cavity plug in the harness. They look like this:

[JMitch19]

Originally Posted by parsonsj

No, there's a cavity plug in the harness. They look like this:

Looks like I just needed to work a little harder... http://www.mouser.com/ProductDetail/...ff%2fQDg%3d%3d

I have a completely stock GM L92 harness sitting right next to me which has no factory cavity plugs. It's good to know these are available.

[parsonsj]

Awesomeness! Thanks very much. I'll ordering up some tonight.

[samckitt]

Pretty sure this is one of the connectors, but I think it is the one that goes to the fan, not the fan module itself.

http://www.casperselectronics.com/st...2fb0a1b1b04209

http://www.eficonnection.com/eficonn...spx?ItemId=915