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You can wire in rca connectors to output to the amps. You'll save quite a bit off the adapters that do the same thing. Here's the link to the tech tips that tell you how to do it. https://www.corvetteforum.com/techti...=120&TopicID=1
You'll want these connections:
"The following are the Bose head unit 4 channel pre-amp outputs
Signal CD/Radio Color code
LF out C4(9) TAN/BLK
RF out C4(10) LT GRN/BLK
LR out C4(11) BRN
RR out C4(12) DK BLU
Common C4(13) LT BLU, DO NOT USE FOR EXTERNAL POWER AMP
Shield C4(14) Bare wire
Ground C4(15) BLK"
99HT provided all this information.
As long as you can solder you'll be fine. I hooked up short female rca connectors to the head unit. Plugged in the male connectors to them and ran to amps. This way I can easily disconnect if I decide to go with aftermarket head unit.
I made up a y-cable to do this, Used female rca's on one end, and put 3 push-on spade connectors on the other end. (1 for left, 1 for right, 1 for common return). I then used self-splicing connectors to 'tap' into the factory wires. My spade connectors push right on to these, so there was no soldering or cutting of wires in the dash.
This is a great method if you don't want to solder. I do it everyday so it was no big deal to cut the wires to me. IMHO soldering the wires is a much better connection.