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Old 04-16-2022, 01:07 PM   #28
Msquared

 
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Drives: Chevrolet SS 1LE
Join Date: Oct 2019
Location: St. Charles, MO
Posts: 1,708
Quote:
Originally Posted by hayt51 View Post
Did you cut off your RCA jacks and run those wires up front for inputs. Iam being told that tis what I have to do to make this work. That means another metra cable upfront if so. I thought I only needed speaker level wires? Sorry For all the questions never done this before.
The RCA plugs on the amp inputs? You can either cut them off or install RCA plugs on the speaker-level wires going into them. I think I did the latter, but either way works fine.

There will only be four wires total going into the amp as inputs (two channels, +/- for each), whereas you'll have eight wires coming out of the amp to the four front speakers (four channels). With the amp in the trunk, it means you need to run the four inputs from the DIY harness up front back to the trunk and the eight amp outputs from the amp back to the IDY harness in front. For the former, I used 16/4 wire that they had locally at Home Depot (18/4 is fine and a bit smaller and easier to run if you can find it).* For the latter, I used that Metra 9-conductor speedwire. Both runs will use the same path under the passenger-side door sill trim and rear seat, so since you're running the speedwire already it's no big deal run the 16/4 for the inputs in the same path.

* You could use the Metra speedwire for the inputs too, but you'd only be using 4 of the 9 conductors and therefore it's fatter than necessary. I probably would have used it, but the 20' roll I bought wasn't long enough for two full runs. So that's why I bought the cheaper and smaller/easier 16/4 cable instead from HD.
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2020 SS 1LE
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