Technical Heater resister wiring fault

[Keithcar5]

Hi all, just after replacing the connector and resistor for the heater as the last one was totally fried, only problem is the heater still doesn’t work. Tried the 40A fuse with a tester and it isn’t broken. The lights don’t come on the column for the heat controls either. I tested the connectors for the heater and there’s no life coming from it at all. I’m pretty sure I wired it up properly so I honestly don’t know what the problem is. Any help is appreciated.
Thanks.

 

[varesecrazy]

Hi

So, gives us some history,

all good last winter,

Controls illuminated ok

And Fan was reliable..?


Did fan just fail.. Or operation became patchy?

Did numbers 2 and 3 still work?

 

[punto2024]

I went through all this today, very awkward space under the glove box to be messing around but once all done with a new loom and connector and resistor i got a noise from the heaters but no air blowing. Very frustrating. Previously on the old melted one the air was blowing when the connector block got a tap. There's a few videos on youtube regarding a more permanent fix i am just watching at present.

 

[varesecrazy]

@Keithcar5 ..

@punto2024

So you independently checked the fan runs OK,

When you made an electrical repair :
Was soldering involved.?
Or a plug. In section of new parts?


Just trying to figure out what is untouched / what Has changed

 

[punto2024]

For mine I purchased a replacement resistor with connection block and loom with wire and connector block from Amazon. I cut the existing wires and soldered the new. Then installed the new resistor end. there's a video on YouTube by someone like backstreet mechanic or something called permanent fix for grande Punto heater resistor. I'm considering doing that but the white block connectors he uses come in different amp sizes and I'm not sure which to go for. Generally I thought these type of blocks were for 240v applications.

 

[punto2024]

 

[punto2024]

These are roughly the replacements I'm not sure if it's the exact same one I ordered but basically the same.

https://www.amazon.co.uk/Aramox-Plastic-Resistor-Harness-Vauxhall/dp/B09K3TNLCJ/ref=mp_s_a_1_4?crid=148M5CF6T1AHM&keywords=fiat+grande+punto+heater+resistor&qid=1705841005&quartzVehicle=35-10635&replacementKeywords=grande+heater+resistor&sprefix=grande+punto+%2Caps%2C94&sr=8-4

 

[punto2024]

It's a very awkward space to be soldering and working without starting to remove sections of the interior. It was a difficult job mainly because of the body position (upside down nearly in the passenger footwell) lol. So as it hasn't rectified the issue it's a bit disappointing. It was just a straight solder with heatshrink applied and connected up to the new resistor end. Problem now is the loom getting shorter and harder to work with each time a repair attempt is made.

 

[punto2024]

 

[punto2024]

Whilst I was under there I noticed way up inside the dashboard a green and orange led flashing. Ominous