I am expecting to put the JL tweets in the dash right where the factory tweets are located. As such, i guess the question is where to locate the crossover. If I put them in the doors, then i need to run new wires from the doors to tweets in the dash. If I put the xovers in the dash (assuming they would fit) then I would need to run new wires from the dash to the JL woofs in the doors. Right?
If the head has only 4 full range outputs (forget the sub for the moment) but 6 speakers - front tweets & woofs, rear coax - how is it currently wired? Do the front tweets & woofs share an output?
Yep, they sure do. Having never dissected the harness, I suspect the wires feeding the factory tweets "T's" into the wire headed to the door. The factory tweet has a crappy electrolytic capacitor built into the frame, so that's where the 6db highpass occurs. Judging only by images, the JL xover looks like it has a fairly large foot print so you may need to hunt for a spot inside the cab. The space behind the center console between the driver/passenger foot well might accommodate them. One thing for sure, fishing wires thru the factory door umbilical is no fun but it can be done. Unless you can do a fair job of sealing the xovers, I'd stay away from putting them in the doors.
If you aren't too concerned about feeding the woofs with factory wires, I'd just leave them in place, stick the xovers in the cab, feed them directly from your amp/HU, connect the low end to factory wires and run fresh to the tweets.
