Hello, I am going to be installing a XM onyx in my 03 TB EXT (no bose w/onstar) with the factory head unit. I would really like to hard wire the power adapter so it wont use one of the 12v outlets in the lower dash. I would also like it to be on the 10 minute shut off delay with the radio. Normally I would run a add a fuse from the block. While this is still a possibility I would rather not have to feed the wire all the way up to then under that dash. Can I just splice into the radio power? or is there another wire I should use to splice into. Thanks for the advice
-Zip
-Zip