Hi,
I installed a new pioneer head unit, and hardwired the XM dock to connect to the power of the head unit and the accessories fuse keeps on blowing out. It worked fine for the first 2 days and all of a sudden the fuses started to constantly blow out. I think I went through 6 fuses yesterday, I even tried switching to a 25A fuse and the fuse started to smoke after 1min. Is there a fix for this? is there anywhere else I can hard wire my XM dock to? originally the XM dock is supposed to be plugged into my cigarette lighter, so instead what i did was undid the casing and solder'd it to my head unit with a grounding cable as well. Is there an easy fix for this?

 

If it worked before and it doesn't work now, it's likely that something changed, and
blowing fuses are usually a sign of a short.
I'd personally guess that whatever you used to insulate the spliced power wire has
been compromised.

 

Wouldnt the fuse on the head unit pop too then/

 

Fuses protect the wires downstream from them.
The fuse within the headunit protects the wires inside the headunit.
If there is a short before the headunit, the current will pass through that short
rather than the headunit, and will blow whatever fuse is upstream from it.