LS-ONE_DAY

I am about to purchase an Aeroforce Interceptor gauge but I know from reading posts on here that sometimes the install is a little more complicated than plug and play via the OBD2 port. I believe the 1998 model years have to also hardwire the gauge for power whereas someone with a 2001 model year did not, he just plugged it into OBD2 and was good to go.

I have a 1999, does anyone know if I would have to hardwire it or not?