Swapping LS1 fans into my truck. Looking to purchase a harness. Nelson Performance sells them and so does LS1Fans,com, anyone have experience with either of them??

It appears that LS1Fans offers a specific harness for the LS F-body camaro/vette fans, whereas
Nelson lists 05 OEM fans and LS fans under same harness. Although I do believe they have different plugs...

 

nobody??

 

Funny I have been searching all day about this and talked to Nelson performance on the phone.
I'm in a 03 silverado and want to do elec. fan swap.
When I get home and measure my radiator (28" or 34") that will make my decision on which fans I'm gonna use 05-07 truck or fbody .
I would like some info on this as we'll . Seems like all the threads are 2012 or older so maybe someone has some updated advice.
The lady with Nelson performance told me 109$ for harness

 

Mines an 03 also, and I measured my radiator and its the 28. I'd imagine yours is also. I purchased my LS1 fans from a guy on LS1 Tech, only 80 bucks for them with 50k miles.

The install is pretty straight forward, just have to get a tune to enable them to turn on.

Still wondering which harness to get...

 

How did u measure your radiator?
This may sound simple but when I measure from side to side including the black plastic pieces on booth sides it's right at 34"
When I measure from the inside of the black plastic pieces it's 28"

And I talk to a guy on lsx monsters. He's been running the Nelson harness for a year with no problems

 

you measure just the metal core. So if you measured 34 from plastic to plastic then thats the 28 inch core.

 

Thank man. That must be exactly what I have then bc it measure 28 core and 34 total .
Looks like Ima get a fbody fan and Nelson harness since I have smaller radiator

 

sounds like a plan.

I'm still confused at how the Nelson harness says it can be for OEM or LS1 fans… I still think they are different plugs...

 

The plugs are different, that's it.

 

well I feel stupid. when you go to order from Nelsons you specify which fans you have, thus they offer different harnesses. I was under the impression they offered just one harness.