Futaba (digital ?) trim swich conversion

[sparks]

Hi all,
Has anyone done this conversion ?
http://www.fragarmor.org/Advanced%20Hints%203.htm" onclick="window.open(this.href);return false;
I have done it in the past on Skysport 4's with great success.
Allthough I'm an electrician, I know very little about electronics, so my question is...
Can this be done with digital trims ? Specifically on the Futaba 7C which I am using for my latest Tamiya project, any info would be welcome.
sparks

[oldfeller]

Hi sparks
This one lost me when it said can I use a soldering gun good luck Mate .
Gerwyn