Existing wires on SP20 Head Unit???

Lazer_ST · 13-03-2007, 05:14 PM

Hi all,

I just bought myself a pioneer double din AVH-p6850DVD head unit to replace the stock mazda unit.
I've been able to successfully wire the system up and works like a charm, the only thing is though, there are three wires left over from the old connection which i have not used in my new unit. One of which is a really thick black one, its thick like a speaker wiring for your home theatre systems. (Its definately not for the aerial, well atleast i think not, because there is a seperate aerial jack). There's also 2 other small wires left behind.

So i'm not sure what they're for. If anyone has any idea please let me know.

Cheers,

ST

chipa · 13-03-2007, 07:55 PM

The only thick black wire I remember is the is the ground connection. What did you wire the headunit ground to?

I'm not sure what the other 2 wires are, but I'm guessing at least 1 of them would be for dimming the lights.

This may help:

Pic originally from here

Pin #: Wire Color - Use

Pin 1: Green / Orange - Rear Right Speaker (-)
Pin 2: Green - Rear Right Speaker (+)
Pin 3: Brown - Rear Left Speaker (-)
Pin 4: Brown / White - Rear Left Speaker (+)
Pin 5: White - Front Right (-)
Pin 6: Red - Front Right (+)
Pin 7: Black / White - Front left (-)
Pin 8: Black / Brown - Front Left (+)
Pin 9: Black - Ground (see note below)
Pin 10: Pink / Black - Switched power, coonect to red wire in aftermarket harness.
Pin 11: White / Blue - Dimmer, not typicaly used for an aftermarket radio
Pin 12: Green / Black - Illumination
Pin 13: Blue / Red - Contasnt Power aka Battery aka Memory, connect to yellow wire in aftermarket harness.

NOTE: For aftermarket units, bolt ground wire directly to frame of car instead of using chassis ground wire on harness. Using the harness ground almost always introduces alternator whine.

Lazer_ST · 14-03-2007, 12:57 AM

thanks chipa that helps heaps! fortunately i got everything right!!

I grounded my head unit directly to the frame of the car and just covered the existing grounding cable. It's an awfully thick cable though.

In the process of doing all of this, i managed to bust the hazard light button. And i'm not sure if this is replacable, didn't see if it could be taken out.

Astina Andy · 26-03-2007, 06:27 PM

poor fella, what you going to do next time you need hazards?

Sims · 03-09-2007, 09:20 PM

Call me stupid, but what does the "Illumination" wire do?

DavoAust · 03-09-2007, 10:11 PM

on the BA it controls when the stock stereo background illumination is on.

basically you turn on your lights and your stereo lights up. aftermarket ones dont use it

RustyKaos · 04-09-2007, 07:15 AM

The illumination is there for when you turn your lights on at night it triggers the dim on the headunit. This is for units that are bright during daylight which can be annoying at night in the dark. It is totally upto you if you want it installed but it is usually a good idea to connect it at least and if you didn't want to use turn it off in the headunit.

tjongdy · 04-09-2007, 07:43 AM

If u do have the dimmer option hook it up ... I found it useful as the light is pretty bright off a headunit and can get annoying when driving at night.

Sims · 04-09-2007, 08:52 AM

There was also an "auto antenna" wire connected. Considering the ariel is fixed, what is this for?

DavoAust · 04-09-2007, 11:04 AM

the antenna is an automatic one, it should go up and down when the headunit turns on the off. that wire can be connected to a +ve out on the headunit for auto control or even a relay and a switch so you can control when it works.

marcs_sp20 · 04-09-2007, 11:13 AM

Quote:

Originally Posted by DavoAust

the antenna is an automatic one, it should go up and down when the headunit turns on the off. that wire can be connected to a +ve out on the headunit for auto control or even a relay and a switch so you can control when it works.

WIth the BJ's in particular, they are fixed, so that rules out the automatic antenna...

DavoAust · 04-09-2007, 01:37 PM

maybe it was an option somewhere? BA hardtop wire "auto antenna" is for automatic aerial, so was my uncles daewoo.

trippedoutmonkey · 12-01-2008, 12:59 AM

did u take the original sp20 head ubnit out for any reason???
can i keep my old head unit in the car and run an amp off that??
does it have the same connections as a standard head unit??
any.all help would be awsome...
cheers

13-03-2007, 05:14 PM	#1
Lazer_ST Junior Member Join Date: Mar 2004 Location: Melbourne, Australia Car: Mazda Protege SP20 Posts: 10 View Photos By: Lazer_ST	Existing wires on SP20 Head Unit??? Hi all, I just bought myself a pioneer double din AVH-p6850DVD head unit to replace the stock mazda unit. I've been able to successfully wire the system up and works like a charm, the only thing is though, there are three wires left over from the old connection which i have not used in my new unit. One of which is a really thick black one, its thick like a speaker wiring for your home theatre systems. (Its definately not for the aerial, well atleast i think not, because there is a seperate aerial jack). There's also 2 other small wires left behind. So i'm not sure what they're for. If anyone has any idea please let me know. Cheers, ST __________________ Cheers, ST

13-03-2007, 07:55 PM	#2
chipa Crazy Member Join Date: Nov 2003 Location: Sydney Car: FPV F6 Typhoon Posts: 1,372 View Photos By: chipa	The only thick black wire I remember is the is the ground connection. What did you wire the headunit ground to? I'm not sure what the other 2 wires are, but I'm guessing at least 1 of them would be for dimming the lights. This may help: Pic originally from here Pin #: Wire Color - Use Pin 1: Green / Orange - Rear Right Speaker (-) Pin 2: Green - Rear Right Speaker (+) Pin 3: Brown - Rear Left Speaker (-) Pin 4: Brown / White - Rear Left Speaker (+) Pin 5: White - Front Right (-) Pin 6: Red - Front Right (+) Pin 7: Black / White - Front left (-) Pin 8: Black / Brown - Front Left (+) Pin 9: Black - Ground (see note below) Pin 10: Pink / Black - Switched power, coonect to red wire in aftermarket harness. Pin 11: White / Blue - Dimmer, not typicaly used for an aftermarket radio Pin 12: Green / Black - Illumination Pin 13: Blue / Red - Contasnt Power aka Battery aka Memory, connect to yellow wire in aftermarket harness. NOTE: For aftermarket units, bolt ground wire directly to frame of car instead of using chassis ground wire on harness. Using the harness ground almost always introduces alternator whine. __________________ King Spring Lows, TWM short shifter, split eardrums, blah blah blah and a little voice saying "I wish I had a turbo" Updated 2007-03-19: Readers Rides Finally upgraded from the stock headunit Last edited by chipa; 16-03-2007 at 02:20 PM.

14-03-2007, 12:57 AM	#3
Lazer_ST Junior Member Join Date: Mar 2004 Location: Melbourne, Australia Car: Mazda Protege SP20 Posts: 10 View Photos By: Lazer_ST	thanks chipa that helps heaps! fortunately i got everything right!! I grounded my head unit directly to the frame of the car and just covered the existing grounding cable. It's an awfully thick cable though. In the process of doing all of this, i managed to bust the hazard light button. And i'm not sure if this is replacable, didn't see if it could be taken out. __________________ Cheers, ST

03-09-2007, 10:11 PM	#6
DavoAust Senior Member Join Date: Mar 2007 Location: Brisbane Car: Red '93 3000GT / Black '08 Ninja 250R Posts: 2,930 View Photos By: DavoAust	on the BA it controls when the stock stereo background illumination is on. basically you turn on your lights and your stereo lights up. aftermarket ones dont use it __________________ Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall, torque is how far you take the wall with you. '97 1.8L Hardtop '93 3.0L TT 3000GT

04-09-2007, 07:15 AM	#7
RustyKaos Senior Member Join Date: Dec 2006 Location: North Side Brisbane Car: 1998 BA 323 Astina Hardtop Posts: 1,414 View Photos By: RustyKaos	The illumination is there for when you turn your lights on at night it triggers the dim on the headunit. This is for units that are bright during daylight which can be annoying at night in the dark. It is totally upto you if you want it installed but it is usually a good idea to connect it at least and if you didn't want to use turn it off in the headunit. __________________ Everytime an idiot dies, 20 more are born. Come challenge me. I dare ya.

26-03-2007, 06:27 PM	#4
Astina Andy Junior Member Join Date: Mar 2007 Location: Brisbane, Australia Car: '97 BA Astina Posts: 122 View Photos By: Astina Andy	poor fella, what you going to do next time you need hazards?

03-09-2007, 09:20 PM	#5
Sims Junior Member Join Date: Jan 2007 Location: Auckland, NZ Car: Sport20 Familia Posts: 167 View Photos By: Sims	Call me stupid, but what does the "Illumination" wire do?

04-09-2007, 07:43 AM	#8
tjongdy Junior Member Join Date: Jun 2007 Location: Melb Car: BJII J48 Posts: 58 View Photos By: tjongdy	If u do have the dimmer option hook it up ... I found it useful as the light is pretty bright off a headunit and can get annoying when driving at night.

04-09-2007, 08:52 AM	#9
Sims Junior Member Join Date: Jan 2007 Location: Auckland, NZ Car: Sport20 Familia Posts: 167 View Photos By: Sims	There was also an "auto antenna" wire connected. Considering the ariel is fixed, what is this for?

04-09-2007, 11:04 AM	#10
DavoAust Senior Member Join Date: Mar 2007 Location: Brisbane Car: Red '93 3000GT / Black '08 Ninja 250R Posts: 2,930 View Photos By: DavoAust	the antenna is an automatic one, it should go up and down when the headunit turns on the off. that wire can be connected to a +ve out on the headunit for auto control or even a relay and a switch so you can control when it works. __________________ Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall, torque is how far you take the wall with you. '97 1.8L Hardtop '93 3.0L TT 3000GT

04-09-2007, 01:37 PM	#12
DavoAust Senior Member Join Date: Mar 2007 Location: Brisbane Car: Red '93 3000GT / Black '08 Ninja 250R Posts: 2,930 View Photos By: DavoAust	maybe it was an option somewhere? BA hardtop wire "auto antenna" is for automatic aerial, so was my uncles daewoo. __________________ Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall, torque is how far you take the wall with you. '97 1.8L Hardtop '93 3.0L TT 3000GT

12-01-2008, 12:59 AM	#13
trippedoutmonkey Junior Member Join Date: Jan 2008 Location: Adelaide Car: Mazda sp20 323 Posts: 62	Completely off topic... kinda did u take the original sp20 head ubnit out for any reason??? can i keep my old head unit in the car and run an amp off that?? does it have the same connections as a standard head unit?? any.all help would be awsome... cheers