Installing A Sub In 2005 Sierra

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i did research on this, and found out that i need a line out convertor to hook up a sub and amp to my stock headunit? has anyone does this on this truck, or similar year? is it easy? otherwise someone said something about splicing into the rear speakers with the rca cables. would this be easier? where are the speaker wires running? in the door? thanks for any help!

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You don't need a line-out(low voltage converter) unless your amp only accepts RCAs as inputs. The easiest way to wire the amp I could think of off the top of my head is to find where your rear speaker wires are under your driver and passenger door sill plates and tap into them there and bring to the amp in the back and hook them to the amp's high level input, not RCAs. The high current at the speaker, if fed into RCAs will burn up the amp. If your amp does not have a connector for high level input you WILL have to purchase a step-down converter to hook up to the RCAs. Keep in mind that all this is based on you not having the bose system, if you do it's a whole other story.

[gnet158]

Doesn't the stock H/U have RCA's in the rears. If so then your set. But a quality H/U isn't that expensive and it will allow you to tune the sound to your liking, instead of "Rock/Pop/Classical/etc".

 

A few tips:

 

Run the power cables and RCA cables down opposite sides of the truck (to avoid interference)

Use a clean metal surface to ground the AMP

Use the Blue "Antenna" cable on your wiring harness to power your AMP on and off when your truck's on

 

 

Good Luck!