Advice... get a new headunit and let them work out the problems. I had the same problem with my bug before i started working for circuit city.. i got a new headunit.. got it installed. They said they had to run another remote line from the steering column. Not a big deal to them. I am a sales rep for car audio... Thats my reccomondation... That way, you have a new headunit that prolly sounds a lot better... you can then run your amp remote line from your new headunit. AND you'll have sub controls.
Do you have a monsoon system? if not, that means you prolly have a tape deck!??!?! If so, that means, they'll charge you a lil more cuz they have to bypass the factory amp.
hope that helped, keep posted.
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90 Celica Sportsback Viper body kit, 3sgte head, lotsa gudies...SOLD!
"woah dude, thats the sickest bug i've ever seen!!"
~mustang gt dude that was just raped