JollyRoger01
Christ Reigns
I really dislike split loom. So I rewrapped my Nelson fan harness with braided and made a 4 ga alternator cable. Here are a few before and afters.
View attachment 184857
View attachment 184857
What did you do to your NBS GMT800 Tahoe/Yukon Today?
- Thread starter vwbeaner
- Start date
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HiHoeSilver
Away!
That's how it's done. Nice job.
JollyRoger01
Christ Reigns
Thanks guys.
PG01
Supporting Member
Im just asking, didn’t everyone say those heat up and fry the relays or did i read it wrong?
bottomline2000
Full Access Member
I had a problem burning up relays. I upgraded the harness to 80a relays with the bigger tabs. They handle the load better. I really had to watch watch my temp gauge when running my ac in the summer. I would blow the high ac fan relay and it would stop my fans from cooling from temp unless I turned off the ac. After upgrading to higher amp better quality relays everything is stable and able to handle the load.
The 00-02 trucks are gonna have more issues because of the way the harness is wired and how often the fans cycle on high. Amp load is too high and I run a 270a DC power alternator so mine really got run thru the ringer..
The harness would be adequate if u can get the fans to operate on ac pressure instead of the ac compressor. Both fans on low seem to draw less amperage than 1 fan on high.
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JollyRoger01
Christ Reigns
Yes I had seen that, It was already shipped when I had read the bad reviews, but the biggest flaw I seen was the ground running to an aluminum bracket. These do have fusible links going to the power source however they are too short for the length for the B+ so they will also be corrected.
PG01
Supporting Member
Just makin sure you dont overheat or burn your shit up bud..
ScottyBoy
Full Access Member
Hmm, I wonder what the AC compressor triggering the fans would have to do with it overheating. I have an OEM harness on my 01 Suburban, and I have the AC compressor triggering one of the fans. Whenever the AC compressor is on, the fan is on. They have been wired up like this for at least 6-7 years now, and been through many brutal Louisiana summers. And I have not had a single issue with wiring melting, relays melting, or relay plugs melting. I have no idea why the aftermarket harnesses seem to overheat and melt so easily, but the OEM harness seems to be able to hold up to the abuse just fine.
JollyRoger01
Christ Reigns
Thanks man first rounds on me.
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