Instrument Cluster Wiring (Mk2 Ph1 1.2 16v)

[Imbrokebecauseofcars]

I discovered this witchcraft hidden beneath/hotwired into my speedo yesterday.

Correct me if i'm wrong, but i'm pretty sure that wires aren't supposed to go straight into the speedo assembly through a gap at the bottom. After disconnecting it cluster.exe stopped responding so I think the red and black wires have been pilfered from the loom/main connectors somewhere.

NOW FOR THE MAIN QUESTION

Where should the ground and positive wires for the clocks actually live?? Atm I'm thinking they belong in the orange connector but I have no idea which pins. Bonus points if you know what this box is and can confirm i'm not being tracked by MI5 or Aliens.

 

[White16valver]

The big blue thing is a relay of some kind - there's a 5v version also:

How to wire up a Songle SRD-05VDC-SL-C relay?

Hello community. I have here a single Songle SRD-05VDC-SL-C relay. (Not the break out board... only the relay itself) I would like to use it... but have no idea how to wire it up. Please can someone explain me how to do it. I am quite new to all this stuff... it would be nice if you could...

forum.arduino.cc

http://www.circuitbasics.com/wp-content/uploads/2015/11/SRD-05VDC-SL-C-Datasheet.pdf

Other than that, I am no use here whatsoever


Can you trace where all the wires go?

 

[Imbrokebecauseofcars]

The big blue thing is a relay of some kind - there's a 5v version also:

How to wire up a Songle SRD-05VDC-SL-C relay?

Hello community. I have here a single Songle SRD-05VDC-SL-C relay. (Not the break out board... only the relay itself) I would like to use it... but have no idea how to wire it up. Please can someone explain me how to do it. I am quite new to all this stuff... it would be nice if you could...

forum.arduino.cc

http://www.circuitbasics.com/wp-content/uploads/2015/11/SRD-05VDC-SL-C-Datasheet.pdf

Other than that, I am no use here whatsoever


Can you trace where all the wires go?

Well at least i can rule out aliens The earth seems like it belongs there (although the ring connector reeks of Halfrauds) and the positive disappears somewhere into dashboard removal land.

 

[White16valver]

Bah! Electronics are evil!

 

[Imbrokebecauseofcars]

Minor update: I found out that the thing was wired into the radio using electrical tape for whatever reason:

Bought a new instrument cluster and it's absolutely unresponsive. I swear I am going to John Wick all the previous owners of this car...

 

[White16valver]

Could it be some kind of DIY immobiliser?? In that perhaps a switch needs to be flicked for anything to work??

 

[Imbrokebecauseofcars]

Could it be some kind of DIY immobiliser?? In that perhaps a switch needs to be flicked for anything to work??

The car works/runs/drives. The main reason I started doing this was because I had a dodgy speedo and a quarter of the mileometer screen worked.

 

[Imbrokebecauseofcars]

Minor update 2: I've found a wire coming out of the fusebox that's been blocked off with some electrical tape. It looks like it used to be red so I think that's the power wire for the clocks and I now need to extend it. In the process of ripping out the dash. Wish me luck!