Should do fine. Make sure the polarity is right though.
Not all machines and barrel connectors use the same polarity.
I put a jack on mine, but I used a small 1/8 inch headphone
type jack vs the barrel connector. Mainly cuz that's what I
had laying around. Worked out great so far.
I've got a video over in the pictures/videos part that shows
where I out it. I think the best place is on the bottom to
the left of the SD card.
I also found one still pix of it. I lightened the pix so maybe it
would show up better. I just wired it in parallel with the
battery terminals. That way everything still works as
normal as far as using internal batteries.
Like I say, double and triple check the polarity to make
sure it's right before putting the juice to it.
Once the smoke is let out, they are usually toast.
Also, it may cancel the warranty adding that jack.
But I didn't care.. I had to have it and I didn't want
wires snaking through the door seals and causing