Moonsoon question???
Thread Starter
Teching In
Joined: Jun 2015
Posts: 4
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Moonsoon question??? First post,
Hello,
I came over from a link on the Pennock's Fiero forum And read the monsoon faq sticky thread, that WhiteBird00 posted>
I have a question as I'm not clear on this part of the wonderful write up..
This is from that thread
C2 - Black 9-pin connector for CD changer
7 - not used
8 - not used
9 - Bare - drain wire
10 - DARK GREEN w/WHITE - right audio signal
11 - BROWN w/WHITE - left audio signal
12 - BLACK w/WHITE - audio return
13 - BLACK - ground
14 - DARK GREEN - power
15 - not used
Can someone maybe even WhiteBird00 help with this
I'm clear on
#7,#8,#15 listed as not used
#14 power I'm guessing power out to the c/d changer to power it
now to the stuff I'm lost on..
every think I've worked with line level signal inputs outputs has a left + and - and a right + and -.
now I'm guessing
#10 (right audio signal ) is the right channel + input from c/d changer to head unit
#11 (left audio signal) is the left channel + output from c/d changer to head unit
#12 (audio return) what is that?? is that the shared - for right and left outputs from the c/d changer to head unit??
as I'm assuming dangerous I know that
#13 (ground) is the power circuit ground for the c/d changer not the ground for the audio channels output from the c/d changer to headunit..
Any help would be much help..
I'm assuming yet again that the factory monsoon amp was speaker level inputs as the headunit has no line level outputs or was the monsoon headunits non internal amp? and required the external amp??
My car is an INDY PACE CAR and the reason for using a factory looking radio .
Thanks Again for any insight ..
I'm sure I'll be full of questions when I get to an ls install in my 86 SS
Hello,
I came over from a link on the Pennock's Fiero forum And read the monsoon faq sticky thread, that WhiteBird00 posted>
I have a question as I'm not clear on this part of the wonderful write up..
This is from that thread
C2 - Black 9-pin connector for CD changer
7 - not used
8 - not used
9 - Bare - drain wire
10 - DARK GREEN w/WHITE - right audio signal
11 - BROWN w/WHITE - left audio signal
12 - BLACK w/WHITE - audio return
13 - BLACK - ground
14 - DARK GREEN - power
15 - not used
Can someone maybe even WhiteBird00 help with this
I'm clear on
#7,#8,#15 listed as not used
#14 power I'm guessing power out to the c/d changer to power it
now to the stuff I'm lost on..
every think I've worked with line level signal inputs outputs has a left + and - and a right + and -.
now I'm guessing
#10 (right audio signal ) is the right channel + input from c/d changer to head unit
#11 (left audio signal) is the left channel + output from c/d changer to head unit
#12 (audio return) what is that?? is that the shared - for right and left outputs from the c/d changer to head unit??
as I'm assuming dangerous I know that
#13 (ground) is the power circuit ground for the c/d changer not the ground for the audio channels output from the c/d changer to headunit..
Any help would be much help..
I'm assuming yet again that the factory monsoon amp was speaker level inputs as the headunit has no line level outputs or was the monsoon headunits non internal amp? and required the external amp??
My car is an INDY PACE CAR and the reason for using a factory looking radio .
Thanks Again for any insight ..
I'm sure I'll be full of questions when I get to an ls install in my 86 SS
Joined: Nov 2003
Posts: 11,332
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
Yes, #10 is the low-level (pre-amp) right side audio signal from the changer to the head unit and #11 is the same thing for the left side.
#12 is the common ground for the audio signals. "Common ground" refers to a configuration where multiple audio signal circuits share a common reference point (usually called ground even though it is not a ground in the same sense as used in a power circuit). Most modern car audio uses "floating ground" where each individual channel has its own separate reference or ground.
#13 is the chassis ground for the changer's power circuit.
The Monsoon amp takes speaker-level input as the head unit is just an ordinary Delco unit with no low-level output. That's what makes it so easy to replace the head unit since any aftermarket HU can be installed with its speaker-level output connected to the factory wiring and the Monsoon amp.
Bear in mind that the changer wiring configuration was provided purely for information and not because it is possible to substitute other equipment. The GM-Pioneer external changer will only work with the appropriate GM-Delco head unit and the head unit will only work with that specific changer. There is no way to substitute different equipment at either end of the changer cable (at least not anymore - there used to be a couple of aftermarket pieces designed specifically as OEM substitutes but they're no longer available).
#12 is the common ground for the audio signals. "Common ground" refers to a configuration where multiple audio signal circuits share a common reference point (usually called ground even though it is not a ground in the same sense as used in a power circuit). Most modern car audio uses "floating ground" where each individual channel has its own separate reference or ground.
#13 is the chassis ground for the changer's power circuit.
The Monsoon amp takes speaker-level input as the head unit is just an ordinary Delco unit with no low-level output. That's what makes it so easy to replace the head unit since any aftermarket HU can be installed with its speaker-level output connected to the factory wiring and the Monsoon amp.
Bear in mind that the changer wiring configuration was provided purely for information and not because it is possible to substitute other equipment. The GM-Pioneer external changer will only work with the appropriate GM-Delco head unit and the head unit will only work with that specific changer. There is no way to substitute different equipment at either end of the changer cable (at least not anymore - there used to be a couple of aftermarket pieces designed specifically as OEM substitutes but they're no longer available).
Joined: Nov 2003
Posts: 11,332
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
No, there are two reasons you can't do that...
First, you will have great difficulty finding a head unit that uses common ground for audio input signals.
Second, and more importantly, the CD changer is designed to communicate only with the correct Delco head unit so that it can handle changing tracks and discs. It's like two modems negotiating a common protocol. Without that communication, the changer will not produce any audio output for you to use.
First, you will have great difficulty finding a head unit that uses common ground for audio input signals.
Second, and more importantly, the CD changer is designed to communicate only with the correct Delco head unit so that it can handle changing tracks and discs. It's like two modems negotiating a common protocol. Without that communication, the changer will not produce any audio output for you to use.
Thread Starter
Teching In
Joined: Jun 2015
Posts: 4
Likes: 0
No, there are two reasons you can't do that...
First, you will have great difficulty finding a head unit that uses common ground for audio input signals.
Second, and more importantly, the CD changer is designed to communicate only with the correct Delco head unit so that it can handle changing tracks and discs. It's like two modems negotiating a common protocol. Without that communication, the changer will not produce any audio output for you to use.
First, you will have great difficulty finding a head unit that uses common ground for audio input signals.
Second, and more importantly, the CD changer is designed to communicate only with the correct Delco head unit so that it can handle changing tracks and discs. It's like two modems negotiating a common protocol. Without that communication, the changer will not produce any audio output for you to use.
confused...
the delco h.u. with c/d changer control.. has line in pin 10/11/12
if I wire a set of rca's to those wires going to the head unit, and hook my I pod to the rca's the delco head unit should not care what is sending the signal, yes you can't control the I pod from the delco unit.. but when set on c/d changer source, what ever line level audio source should play through, just like if it was an aux input..
what am I missing, ?
Joined: Nov 2003
Posts: 11,332
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
What you are missing is that you will not have the option to select CD changer as an input source on the head unit unless the HU actually detects a factory CD changer connected to the port. Simply wiring in your other device won't work.
You have two choices if you plan to stay with the factory HU... you can buy an auxiliary input adapter like the old PIE GM9-AUX (discontinued and hard to find) or the USA-SPEC PA11-GM45 which is more expensive but still available OR you can open up your head unit and make internal modifications to patch an auxiliary input into the head unit's internal CD player audio channels: https://ls1tech.com/forums/stereo-el...t-adapter.html
You have two choices if you plan to stay with the factory HU... you can buy an auxiliary input adapter like the old PIE GM9-AUX (discontinued and hard to find) or the USA-SPEC PA11-GM45 which is more expensive but still available OR you can open up your head unit and make internal modifications to patch an auxiliary input into the head unit's internal CD player audio channels: https://ls1tech.com/forums/stereo-el...t-adapter.html
Thread Starter
Teching In
Joined: Jun 2015
Posts: 4
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Thanks, I have already added a mini plug to use as an aux input..
just not a fan of a plug and wire hanging out of the face plate when in use,
I had bought a very high end kenwood unit for use in this car but The Fiero is so small , and easy to break into.. And I use it as my daily.. a stock looking unit is a better fit,
now if I could bypass the internal amp and make it have left and right ,front and rear pre outs, I'd be in heaven..
The kenwood will go in my 86 SS that will some day get an lsx
Thanks for the replies..
oh, and one last thing,,
what is #9 "drain wire" ??
just not a fan of a plug and wire hanging out of the face plate when in use,
I had bought a very high end kenwood unit for use in this car but The Fiero is so small , and easy to break into.. And I use it as my daily.. a stock looking unit is a better fit,
now if I could bypass the internal amp and make it have left and right ,front and rear pre outs, I'd be in heaven..
The kenwood will go in my 86 SS that will some day get an lsx
Thanks for the replies..
oh, and one last thing,,
what is #9 "drain wire" ??
Trending Topics
Joined: Nov 2003
Posts: 11,332
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
If you install the USA-SPEC PA11-GM45 adapter in the changer port on the back of the HU, you can then add a Bluetooth input adapter connected to the RCA jacks of the PA11-GM45 so that you can have wireless audio.
The drain wire is used to enhance the shielding of the harness for the low level signal. One end is connected to the harness outer shield inside the harness and the other goes to ground at the head unit.
The drain wire is used to enhance the shielding of the harness for the low level signal. One end is connected to the harness outer shield inside the harness and the other goes to ground at the head unit.
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