mapadon

Hello everybody, I´m building my own FWD-OH with Sismo boards for Project Magenta, and I can´t find or identify offset (in sysvar.txt and pdf file)for the backlight of the FWD-OH. Is there any specific one or is better to link it to maybe the DC batteries or something like that? By the way, any offset for the Oxygen servo in the after overhead?Im planning to buy it, but if there´s no offset available, I´ll save money for other things. Thanks a lot