Sub install gone wrong

[420in240]

The other day i installed a deck, amp and sub into a buddy's MR2 and ran into a small problem. When the deck was set to the radio, it all worked fine and sounded great, but when we went to toss in a CD, the sub stopped working and just the mids played. I busted out the altemeter to check voltage levels on the sub. It showed a reading with the radio on and went back to 0.00 when the CD played. If anybody has any idea on what kind of mangled mess i've made, please get back to me. Thanx.

[xekushnr]

hm, the only thing i can really think of is that you may have spliced the remote wire for the amp to the power antenna wire in your radio harness instead of the remote wire. make sure it attached to the blue wire with a white stripe instead of a solid blue wire.