If you are unsure about it, I would suggest installing a modbo 745 or a modbo 4.0. they rely on wired installs solely.
Also, to access the config menu on any of them, you'll need to press and hold triangle and circle on the controller while powering on the system. the same for any matrix clone. but why hassle with soldering when FMCB is almost as good as a chip on running games. it only lacks ps1 backup compatibility really. that is the only feature the mod chip still holds over FMCB.
If you need help, post a question in the
forums, not my PM inbox. Thank you.