Heater wiring in Engine Bay melted

[Big Dawg]

Hey everyone,

My issue now is that the Heater motor wasn't turning on, and I noticed that the pink and black wire connector wiring that goes into the box in the engine bay was melted.....the pink wire specifically.

I removed the connector and cleaned the terminals and plugged in the wiring to the terminals and a single connector on the pink wire so it wouldn't arc out.

Well after about 2 days I looked at the pink wore and connector and it looks as if it's heating up as the connecter is a bit melted.

Has anyone ever dealt with this issue before? How do I fix this and prevent this from keep happening?

For now I left the pink wire unplugged.

Could the part that is bolted into the box with the wiring connected into it be faulty? Blower module resistor? I have an Electronic Climate Setup for AC.

Here are some pics.

Thanks guys

 

[Big Dawg]

Just to clarify, the pink wire wasn't melted but the plastic delphi connector that the pink side was melted.

 

[Chuck Leeper]

Bad connection, short, excessive amp draw.
"Could the part that is bolted into the box with the wiring connected into it be faulty? Blower module resistor?"
Take it out and look.
AIRC, the shop manual tells you how to test it.

 

[pacecarta]

caspers.. https://www.installationinstructions.com/107146.pdf

 

[GNVenom]

Corrosion is what kills that connection. It happens because the electrical connection has a horizontal surface and collects water and moisture, which leads to galvanic corrosion and is unavoidable due to poor design.

It's a common problem with the digital climate control-equipped Regals. The blower module is probably defective as a result, as corrosion leaches into the module. You will need to replace that, along with both pigtails in your harness.