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Cluster fuse blows when connected

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  #1  
Old 06-11-2018, 04:23 PM
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Cluster fuse blows when connected

2006 f150 stx 4.6 v8, 160k.


Hey all, first post here .

So I just got this truck used. it runs great after plugs and coils, and a power steering line replaced.

Then the cluster died .

So I replace the fuse, and it did good for a while, but now when I replace the fuse it blows immediately .

The black with green wire is not shorted, and the cluster only blows when I attach the left side connections on top of the cluster itself . The right side let's it power up .


I've attached a link to a video so you can see what I mean.

The cluster itself is new salvage from a running perfect truck that got read ended .

If I have ruled out a short in the black/green, and the cluster itself isn't broken, why is my fuse still blowing?! I must be shorted somewhere else but I dont know which wires(if any) are supposed to carry voltage when the connector is disconnected.

Does anyone have any advice?


Thanks!

-merv.

https://youtu.be/LxoCDxAfodk
 
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  #2  
Old 06-11-2018, 08:07 PM
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Sounds like bad solder joints in the cluster.
 
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  #3  
Old 06-11-2018, 08:26 PM
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Originally Posted by ManualF150 View Post
Sounds like bad solder joints in the cluster.

In two separate clusters doing identical things?

I don't doubt it's possible but my gut is telling me that one of these wires off the left connector is shorted. I just dont know which to follow.
 
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  #4  
Old 06-11-2018, 08:35 PM
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Time to start getting a DMM out and do some continuity testing.

How about when the cluster is disconnected completely. Does it still blow?
 
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  #5  
Old 06-11-2018, 09:08 PM
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No the thing only blows when both connectors are plugged in. The video I linked shows it . It doesn't blow with the passenger side connector plugged in .
 
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  #6  
Old 06-12-2018, 07:16 AM
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It helps if you identify the specific fuse by its designator since there are a number of fuses that connect to the cluster.
 
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  #7  
Old 06-12-2018, 07:43 AM
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Originally Posted by projectSHO89 View Post
It helps if you identify the specific fuse by its designator since there are a number of fuses that connect to the cluster.


Fuse #21. 15 amp mini.
 
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