Turns out the new rear speakers were interfering with the compass sending unit. To solve the problem we relocated the compass sending unit about 10" or so to the left, (to the former location of the factory sub-woofer, then re -calibrated the compass (per owners manual instructions) and the problem was solved.
For what it's worth, I had an astounding sound quality improvement by replacing all seven factory speakers and adding some other fun stuff.
This is what I did;
1. Replaced ALL FOUR front door speakers with high quality component mid ranges and tweeters (the kind equipped with "component" crossovers. Don't make the same mistake I did by installing co-axials and keeping factory Honda door tweeters on line. From me, the result of this cost cutting move was a combination too much high end sizzle and non existent mid range.
2. Adding Dynamat to the inside of the front doors (which had the added benefit on noticeably reducing road noise)
3. In the trunk, added an amp and single 10" sub-woofer (in it's own enclosure) then removed and pitched the cheap factory sub-woofer.
4. Added dynamat material under the rear shelf.
5. Replacing the the rear L & R shelf speakers with high quality co-axials.
6. Adding an Isimple IPod adapter and HD radio plug in interface to the factory radio.
Parts and installation came to around $1200. If your mechanically inclined and did it yourself the price would probably be half that.
No new holes were cut and the radio is exactly factory. Car stereo now sounds like a concert hall - yet looks to be original equipment in every way.
Factory AM/FM/XM continues to work and all songs /artist are displaying properly on the factory screen, irrespective of source. Factory steering wheel controls also work fine.
Wednesday, April 14th, 2010 AT 4:12 PM