need some help wiring factory headunit to sub

[thaster 10+ year member]

my friend have a toyota camry 2007 and wanted to install 2 subs in his car while still using the same OEM headunit. Im having major trouble with the amp turn on lead. I thought i correctly connected the turn on lead to the acc/ignition wire, but when i turn on the car everything powered and the sub worked. but when i turn off the key and took it out, the radio and amp was still powered on. I was confused. so the next option was to connect the turn on lead to the battery wire and everything worked but the amp still didnt shut down. So for now, i installed a switch in the turn on lead so he could manually turn it off and on. is this bad? did i do something wrong? any way to fix this?

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[dman4486 5,000+ posts]

my friend have a toyota camry 2007 and wanted to install 2 subs in his car while still using the same OEM headunit. Im having major trouble with the amp turn on lead. I thought i correctly connected the turn on lead to the acc/ignition wire, but when i turn on the car everything powered and the sub worked. but when i turn off the key and took it out, the radio and amp was still powered on. I was confused. so the next option was to connect the turn on lead to the battery wire and everything worked but the amp still didnt shut down. So for now, i installed a switch in the turn on lead so he could manually turn it off and on. is this bad? did i do something wrong? any way to fix this?

sounds like you connected the remote wire for the amp to a constant 12v instead of switched 12v source

 

[thaster 10+ year member]

sounds like you connected the remote wire for the amp to a constant 12v instead of switched 12v source

but i connected the remote wire to both the acc wire and the battery wire and it still powers on. However when i wired to the acc wire, the radio still turns on when the key is not even in the car!

 

[dman4486 5,000+ posts]

then you have more issues than just the remote wire...get a dmm and do some testing

 

[twisztdpunisher 10+ year member]

my radio i have it wired to a constant 12v source and i have to manually turn on and off every time.

 

[dman4486 5,000+ posts]

my radio i have it wired to a constant 12v source and i have to manually turn on and off every time.

ok

 

[thaster 10+ year member]

imma get a DMM to see if the wires are putting out a constant 12V or not. is it safe to use a switch in the turn on lead though?

 

[dman4486 5,000+ posts]

imma get a DMM to see if the wires are putting out a constant 12V or not. is it safe to use a switch in the turn on lead though?

yes...get a toggle....the current is so little it won't matter

 

[thaster 10+ year member]

k thats what I installed for my friend to use now. Imma try to fix his stuff tomorrow but for now he got a switch which is somewhat cool to have.

 

[dman4486 5,000+ posts]

check grounding as well in your testing

 

[thaster 10+ year member]

how do you check grounding? i didnt sand the area around the ground wire but i assumed the amp turns on so grounding is not an issue. i guess i mite be wrong.

 

[dman4486 5,000+ posts]

just cause it comes on doesn't mean it is grounded correctly....you may have focked up doing that as the amp will find another path to ground

this possibly being through the hu which can mess that up too.... fix the ground and connect the remote to a switched source, post back tomorrow

way to fock up your friend's shitz