DIY Adding an electric fan(s)

[dyogim]

Decided to add two 9" electric fans to help cool things down a bit during those hot days. For now, I've installed only one fan. Second is awaiting for the dual cooler set-up to be installed. In anycase, I hooked everything up to a relay, switch and 12V power source. The fan currently installed is to help keep the tranny cooler temps down. For now I've zipped tied the fan to the tranny cooler, ran the lines to the Blue Sea Fuse block and then to the relay and so on. I was able to use the dome light as the 12V source and install the swtich into the sunglass holder. I'm hoping this helps a bunch in the longevity of the tranny. Fan only cost about $20. Here's the pics of the install:

Fan installed:

More switches will be migrated to the sun glass holder...

[tinik]

extra cooling is always great!
Thanks for posting.

[dyogim]

Originally Posted by tinik

extra cooling is always great!
Thanks for posting.

Now I just wish the ScanGauge has the capability of measuring the tranny temp. I may look into incorporating one myself on a separate gauge....

[shawn74]

great write up. I'm going to try that to help with keeping my temps down while towing. Try these codes on your SG:
TXD: 686AF101B4
RXF: 044105B40000
RXD: 2808
MTH: 00090005FFD8

TrailerBob found them and posted them in the 1-gen tundra forum. People with tundras before 05 say that they are getting what looks like tranny temp readings. It would be interesting to see what you get with your fan on and off. If the numbers drop with the fan then I think that is the ticket. I have an 05 and they don't work for my year or newer. I am eager to hear what you find out.

[dyogim]

Originally Posted by shawn74

great write up. I'm going to try that to help with keeping my temps down while towing. Try these codes on your SG:
TXD: 686AF101B4
RXF: 044105B40000
RXD: 2808
MTH: 00090005FFD8

TrailerBob found them and posted them in the 1-gen tundra forum. People with tundras before 05 say that they are getting what looks like tranny temp readings. It would be interesting to see what you get with your fan on and off. If the numbers drop with the fan then I think that is the ticket. I have an 05 and they don't work for my year or newer. I am eager to hear what you find out.

I've entered those and ran some test using the fan. I posted in that thread. I don't think that's for the tranny. IMO - It's the oil temp reading. The numbers did not drop with the fan on