|
The factory head unit has two power feeds: The 5A one and an ALWAYS HOT 15 circuit. The head unit uses the 15A circuit (switched internally) to drive the power amp portion of the circuit, the 5A circuit is used only for the control portion of the radio. The after market head unit doesn't operate this way, it's pulling all of its power from the 5A circuit and overloading it.
Rewire a heavier gauge wire circuit and fuse for the head unit.
Fuses aren't there to protect the load, they are there to provide protection for the WIRING to the load device. Your factory wiring is likely too small of gauge to adequately supply the head unit.
Steve
__________________
1989 Taurus SHO What a project!
1997 Ford F150 SC 5.4L New Work Truck
1998 Ford Contour Wifey's daily driver
Last edited by projectSHO89; 07-16-2008 at 10:14 AM.
|