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Discussion Starter · #1 ·
Seems there's a lot of topic on blower motor resistors blowing out. After the second one went I replaced the resistor, the motor and put a new plug on and I'm still blowing them. I attached a photo showing it's always the same two. Any suggestions?
 

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There is current that make these connectors melt and discolor. I'm wondering if you add a ground wire from the fan, anywhere on its chassis to the truck body may benefit to help reduce the current going back thru that harness???
 

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Discussion Starter · #3 ·
That I'm not sure about. I wouldn't know much about that as to where to place it at. I do know we've only been running it no more than the 3rd setting. There's 4 settings I believe and we haven't been running it on high and it's been working good now so I tend to believe it has something to do with running it on high.
 

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If you replace the plug again, I'd suggest making sure the female connections are good and tight then coat them with dielectric grease. The pins are burning up due to a loose connection.
 

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OK. Do I coat them before I snap them into the plug? After the plug is snapped in the pins are no longer accessible.
 

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OK. Do I coat them before I snap them into the plug? After the plug is snapped in the pins are no longer accessible.
I recommend using a fine brush or Q-tip to make sure that the metal pins are covered. Now that you know those pins have a tendency to do that, as soon as you see discoloration on the plug you can address it then.
 
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