i had a shop install an avic d1 but i noticed they didnt install my stock subwoofer on a 2005 expedition eddie bauer, i called them they say i cant connect it to my avic d1, is their an interface i can get to make it compatible with my avic d1, whats the model # where can i get it?? thanks
70-5521. That comes with the sub harness.
so can i connect to the harness provided with the avic d1?? how? please help thanks!!
he just told you how... buy a Metra 70-5521 and use it... that's how
or here... 70-5522
yup yup
so can i connect to the harness provided with the avic d1?? how? please help thanks!!
the metra 70-5522 plugs into the factory sub harness and into the d1's sub out. connect the blue/ white wires together, but put a resistor between the two. somewhere between a 2.4 and a 3k
im a newbie so when you say connect the resistors to each one of the cables what do you mean by 2.5 to 3k?? sorry 
the value of resistance
Does the resistor technique work on any vehicle? The reason I ask is my mustang I has a different voltage between stock an aftermarket so there is a pop on turn on/off. Would the resistor fix that?
yes, the 3k is what i use on fords to eliminate the pop
and do the these have to be soldered??
it would be best
REally? I thought wire nuts were the best.
REally? I thought wire nuts were the best.
yup