Blower motor connector burnt!!

Hey guys I'm new to TW but in need of help to figure out what's going on with blower motor.

To start its a 2009 taco (2nd gen) and can't figure out why my connector to my blower motor keeps burning. I have replaced the blower motor and connector 6-7 months ago due to the same issue. Where I had the blower motor completely sh!t the bed and the connector was smoking abunch. So the last week or so i noticed the blower motor made a squeaking noise when on but also cuts in and out. So I decided today to check out the connector to see if it was loose and that's when I noticed that the connector has been burnt again! I dont want to keep running the heat if its going to catch fire or somthing. Looking for all the help I could get since it is snowing where I am.
Thanks

 

Hate to say it but unless your using OEM parts it's probably just shitty chinesium junk.

 

There is an improved resistor & plug, here is a link to the technical bulletin from Toyota. https://www.tsbsearch.com/Toyota/T-SB-0062-21

 

That's for the resistor.
The aftermarket pigtails you can buy for the blower itself is usually a smaller wire size.
Which increases the chances of it happening again.
AFAIK, No one makes a "good" aftermarket pigtail for the blower.
You're stuck buying the connector and terminals individually building your own OEM pigtail.

 

But the resistor is part of the power feed circuit for the blower. So if the resistor has a problem it can effect the blower. I don't think bigger wires are the answer. Toyota engineered the circuit & wire sizes.

 

What I am saying is, If OP bought an aftermarket pigtail for the blower, It likely had a smaller diameter wire than the OE wire.

For instance, just read the reviews on Amazon.

$9 6" Blower Motor Connector Plug Wire Harness Pigtail Kit with Heat Shrinks Connectors Fits 2005-2016 Toyota Tacoma Replace 82998-12380 90980-10916

https://www.amazon.com/Connector-Co...ma+blower+motor+pigtail&qid=1700621884&sr=8-3


Again AFAIK, all the aftermarket pigtails are the same cheap low quality.
I wish someone would make a good pigtail. It might be a decent gig for someone on TW if they wanted to buy all the parts and make a batch.

 

I replaced the connector with an OEM one

 

How could I tell if the Resistor is bad?

 

a) when a connector cooks, both side are compromised
b) the initial heat that started the deggation comes from the resistor pack

 

Do you happen to have the part#?
Or remember where you bought it?

 

Also where did you get the blower motor. Sometimes the motor drawing too much current causes issues with the connector and/or resistor.
Also any water leaking into the blower area?

 

The blower motor is the only thing that's not OEM.

 

https://www.tacomaworld.com/threads/2nd-gen-information-diagnostics.784008/#post-28042158

 

You're a beauty

 

Thanks! I found the part number for the connector that I used.

$13 90980-10916 6" 12ga Harness New

90980-10916 for the plastic connector

$10 82998-12380 90980-10916, 6"es 12 Gauge Wire Harness

82998-12380 for the wires

 

Should I get a OEM one?

 

I would get either an oem one or known oe manufacter like denso, acdelco, delphi.

 

Hi

I can confirm the same issue. I built and replaced the connector for my climate control module after going through the original factory and a spliced factory connector. Not to mention 2 panels.

this last time I also replaced the resistor, blower motor, and pigtail to the blower motor. I did buy the Toyota upgraded resistor (82141-04Q80 & 87138-04070) but failed to buy genuine Toyota pigtail to the blower.

After a strong electrical fire smell my AC suddenly stopped working and upon investigation I found a totally trashed connector. See for yourself and never by the crap. Despite it being advertised as 12ga, it’s clearly not.

$13 for Compatible with Toyota Tacoma 2005-2016 Blower Motor Connector 90980-10916 6" 12ga Harness New

https://www.amazon.com/dp/B07YXLJP18

the replacement I put on today I can confirm was significantly thicker gauge wire and I don’t anticipate an issue from it.

$10 12 Gauge Blower Motor Connector Harness for Toyota Tacoma 2005-2016 Replace 82998-12380 90980-10916, 6"es 12 Gauge Wire Harness

https://www.amazon.com/dp/B0B37K4TZ1

 

All that heat damage was due to a loose terminal that acted as a heater and the actual current would be reduced due to the increase in resistance.

If it were an over current condition it would have blown the fuse and the damage would be the entire wire not just heat damage at the terminal and immediate area.

Ohms Law cannot be avoided.

Some basic info:

https://www.electrical101.com/ohms-law.html

 

I’d say the wire was just too small for the current at least. Ohm’s law still applies. Could be a loose connection too but I always pack new connections with di-electric to best my chances