well i did this today man it was a bitch, dont use their 5v and ground in the tutorial, they didnt work on my US saturn.
I had to get different power
for example say these are the 4 posts the PSU plugs into
1 2 3 4
my modchip is soldered to 3
for my 5v I soldered to the base of pole 4 and for my ground soldered to the base of pole 1.
then it worked(3rd time completely taking system apart.)
yea weee
thank god
anyhow so for this switchless mod
power on it thinks it jap, throw your US game in, says system isnt suitable for this disc. press reset and hold for a few seconds, boots up your US game. Still messing with it, seems like i have to power off/on to get back to a jap system, but seeems like holding the reset button longer switches regions. Testing this bad boy a little more, then its going on ebay.