Upgraded factory radio in my 97 Mark VIII LSC with JBL Premium Audio

tbirddmnd

Listening on 141.850 mHz
I'm currently totally ditching the JBL amp, it died with loud thumping "static". I'll be direct wiring the speakers from the Sony radio pictured on page 1. The amp has a date that indicates September 1996.
 

tbirddmnd

Listening on 141.850 mHz
The wiring was finished Tuesday night. In actuality I removed the rear blown amp, as well as the wire plugs that go into it. With a diagram I had that details what each wire is I removed the wires from the plugs and connected the speakers in parallel for now. Yes, the Sony head unit goes into auto-protect mode if I turn it up too much. However I don't normally listen at that high volume so I'm good for now. There is no distortion at all and the Sony radio's internal amp sounds loud and very clear. I should have by-passed the JBL amp from the beginning. Once the snow starts to fly the Mark will be put to bed with a cover in the garage and it won't matter at that point since I won't be driving it to listen to the radio.

In the spring I'll directly re-wire the speakers correctly with Monster Cable from the radio, bypassing the vehicle's speaker wires. The tweeters will be wired in parallel with the Infinity Kappa 6x8s that I installed at their corresponding locations in the doors and rears. In other words, all 8 speakers won't be parallel as it is now, just each individual 6x8 with their tweeter.

Rod - if you're still here I can confirm that the Scosche wiring matches the Sony radio wiring color-for-color. See the images below. I removed the Scosche converter since I didn't need it anymore and directly connected the wires that went to the green Scosche adapter going to the factory wiring.
 

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tbirddmnd

Listening on 141.850 mHz
Scosche is an aftermarket manufacturer of car audio accessories which includes car audio installation kits and electronics as well as iPod, iPhone and GPS accessories.
 
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