Replacing the DC PSU

what did you use to connect the wire to the Dreamcast board power pins
are these thermal wire shrink?
from where i can buy them

thank you

 

Its all in the post. I desoldered the power connector from the PicoPSU and used a part of that to connect to the pins on the motherboard.

"As you can see, I desoldered the power connector from the PicoPSU so I could solder directly to it. I cut one of the desoldered power connectors into four parts using a thin metal saw. This is what I soldered the power into and fit on the existing motherboard connectors"

Yes, its shrink tubing. You can buy that in any electronic store I think.