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Old 01-02-2020, 12:30 PM   #134
MDPotter
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Join Date: Aug 2018
Location: Western Colorado
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Re: Son's 68 c10 Short Bed

Quote:
Originally Posted by Camaroguy View Post
3 relays for the fan or the harness? The fan was 2 and the harness has 3.
For the fans. It's a GM schematic that allows both fans to run half speed at the low temp setting and then both run full speed at the high temp setting. This setup gets its triggers from the PCM. I like it because it pulls air across the whole radiator all the time and is quieter.
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1964 Chevy C10 - Gen IV 5.3 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=768632
1968 GMC C15 - Gen III 6.0 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=772047
1969 Chevy C10 - Restoration http://67-72chevytrucks.com/vboard/s...d.php?t=809184
1978 Chevy Scottsdale K20
1993 Chevy C1500 - 5.3/T56 swapped
2008 Silverado Duramax
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