Looks handy for large amp readings, but the jaws are too large for reading the small values for parasitic draws. Too bad the specs aren't clear for DC current limitations.
What did you do to your NNBS GMT900 Tahoe/Yukon Today?
- Thread starter phattyford
- Start date
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Looks handy for large amp readings, but the jaws are too large for reading the small values for parasitic draws. Too bad the specs aren't clear for DC current limitations.
ya I read the reviews about that one guy said it wasn't going to work for low draw and another said it did
iamdub
Full Access Member
I read that those adapter harnesses don't really do anything but adapt the physical harness and only connects one of the functions. You can replace the regulator inside with the correct pins, though. Requires very little, but easy modding for fitment and minor soldering.
mattbta
Full Access Member
That’s what Mechman had me do. Knew it was excited because it hummed a bit, but still only low 12v under high load. Super weird because I’m 100% OEM electric wise aside from the electric fan conversion, and obviously the upgraded wires for the Mechman. I’ll start a thread in a bit in the NBS section. Sorry all!
I got one of these a few years back when they were about $125 but from eBay. They'll do the low DC current measurement with the small jaw, but it's only a 1/2" hole. Worked great to find a few parasites...
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oh, on a side note. I stumbled onto a box that will take a normal relay turn on trigger and use it to put out a pwm for brushless fans. it's not really adjustable but it will take the low signal and put out like a 30% and then high be 100%. I know the normal trucks only have 2 speeds but mine has 3 and the box does up to 3, so I'd get a low med high. and those points are adjustable with hp. so with this crazy tx heat it got me thinking about finding a setup of newer brushless fans from one with a high tow rating and see if they bolt on. I'd guess if you found the right part number or rpo code they would be cheap oem take offs on eBay.
should cool better for less power drain than my old brushed ones. box isn't cheap thou.
should cool better for less power drain than my old brushed ones. box isn't cheap thou.
are they going to warranty it? or did they say to send it in for repair? I don't think they have much of a warranty period but they will repair themThat’s what Mechman had me do. Knew it was excited because it hummed a bit, but still only low 12v under high load. Super weird because I’m 100% OEM electric wise aside from the electric fan conversion, and obviously the upgraded wires for the Mechman. I’ll start a thread in a bit in the NBS section. Sorry all!
mattbta
Full Access Member
Richard said they would warranty it, but I’m not 100% certain it is the alternator since the 19 year old OEM one does the same. Still have to pay shipping and be back on OEM while I wait.
ahh.. yeah, it won't really work. correctly for you.. it would default to 13.7v at the terminal and not reference anything. I don't know. about the check. engine light thou.. the mechman is probably the better bet.
the newer 220am ones, I haven't found anyone that sells the regulator swap from 2pin pwm (I think they are calling these hairpin style because of the rear fins) to the old school ones, only the older style alternators but they do sell a stand alone back that you can adjust the pwm from and set the voltage you want. it's about 80$ or so.. or can be made for 20$ from ebay parts diy.
I didn't realize you had the older style.
since you gotta send it back, if you did find a cheap used one like iamdub got(and found me) , this would be what would control it.
Voltage PWM controller based on Internally Regulated Alternators PCM CONTROLLED 05+ GM vehicles
This is a voltage knob made for PCM controlled 05+ GM vehicles with the small rectangular 2 pin plug. It makes it plug and play with the GM 2 pin harness. There is no splicing of your stock plug required. These are generally in stock and ship within a couple of days of purchase. They work on up...
brand-x-electrical.myshopify.com
