Guys i am installing a narrow band A/F guage ( I know there not good for anything but show) and need to know if anyone knows what color the signal wire is on the O2? Also I am installing a trans temp guage too and need to know if there is a good spot to tap into on the trans and what sender I need either the autometer 2258 or 2259. Is there any drilling and taping needed ? Pix would be great for the trans temp sender. Thanks guys.