Not sure how smart is to use fuse from cigarette lighter. Check how much Amps woofer requires. Cigarette lighter usually can take 10 amps max.

 

Checked to see if it would be ok first and it is I just want to know how to wire it off the front door speakers with crossovers

 

You are better off using under dashboard fuse box and the suitable fuse tap (see attached)

 

That's what I have I need to know what connections go where from the subwoofer to the speakers and crossovers

 

Try YouTube, example

Typically, you hook the wiring near the head unit, not in the door.

 

Ok will fiddle around thanks