View Single Post
Old 09-01-2016, 05:09 PM   #4
fdryer
Super Member
fdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond reputefdryer has a reputation beyond repute
 
fdryer's Avatar
 
Join Date: Jan 2006
Location: NYC
Posts: 45,789
 

2003 L-Series 3.0L Sedan
Default Re: L300 Annoying Hiss When Listening to the Radio or CD Player

Before radios added tape and CD's, most used self contained amps without needing a separate amp module. Many are stand alone units without needing a separate amp.There's more to car stereo systems than anyone can imagine. Ever since AM and FM radios gave way to adding tape, CD, vcd's, navigation and OnStar, entertainment systems are sophisticated. And probably a reason they went from standard to double din size with supplemental modules either tucked under the instrument panel, under seats or in the trunk.

Another way to see if you have a separate amp is the descriptions of speaker wires as twisted and bundled to connect radio to amp under the instrument panel beam. Service manual pictures aren't drawn well and descriptions go like this;

Remove the fasteners that attach the amplifier to the instrument panel (I/P) beam.
Slide the amplifier off of the clutch pedal bracket.
Disconnect the electrical connector connectors from the amplifier.
Remove the amplifier from the vehicle.
fdryer is offline   Reply With Quote