I have a 2009 double cab with the JBL system in it. So far I have had a bunch of trouble with it. 18 months ago, the volume knob stopped working and Toyota replaced the head unit. The new head unit was fine until last week... now there is no sound at all and the volume numbers are permanently at 24. The display on the head unit is missing several elements of the seven segment displays. I have tried to remove fuses and resetting the radio to the best of my ability, but I think it's shot. Either that or my amp is toast. I don't really know how to test which of these is busted so I'll take it in for that.
Because Toyota will charge me ~$750 to replace and install a new radio I have started looking at more capable aftermarket radios and after tons of research I have some questions that still need answers:
1.) I'm Looking at the Pioneer AVH-P4400BH/8400BH because it has 4V preouts and it will supposedly sound nicer with an amp. Is this true? Lesser units than the 4400 all have 2v preouts. Specifically, with respect to the OEM JBL amp, are the 4v vs 2v differences noticeable?
2.) I would like to use the existing OEM satellite antenna and, while I have done my research here, the only option I found was to buy some converter for a lexus (http://www.tss-radio.com/products/le...ntenna-adapter). Is this what I need or is this a cable I buy and then have to modify?
3.) As you have probably determined by now, I am a novice. I am pretty handy, but have no experience installing car stereos. Is this something I can do myself or am I out of my league here?
Thanks for any advice,