DSP wiring: 3 unknown wires

Froidas · Post by **Froidas** » Mon Aug 19, 2013 8:19 pm

Thank you much for you time and help

Yes, your system is the same as my friends.
And the last 3 photos are the same

But I see what I need to see and that's enough for me. And I don't need exact part numbers.

Well, it looks like I will need to take the risk and try to connect 2 wires, that corresponds that two yellow wires. I will update this thread, when I'll have any news.

Thanks again ! Rep points for you !

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Mon Aug 19, 2013 9:46 pm

Froidas wrote:And the last 3 photos are the same

Doh!

Sorted - the extra pic now added...

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Sun Aug 25, 2013 10:52 pm

Told you what you'd start me off doing @froidas!

btw, yes the changer does have memory (picks up playing exactly where you switched it off)

Froidas · Post by **Froidas** » Mon Aug 26, 2013 5:34 am

Looks good, don't forget to wipe out all the dusts

We found the problem with my head unit. The lower part (lets call it equalizer, not sure if I am correct here) has couple contacts burned inside. I hope it will be easy fixable.

And we have the answer to 2 wires from those 3. I know it's quite obvious, but how can you connect positives without any background information

So with these wires connected and non broken equalizer used, it turned on and played !
* green/black - negative
* green/blue - constant positive (when the ignition key is off)
* green/white - still unknown. Hope to guess it when my head unit is fixed.

PreludeBB2 · Post by **PreludeBB2** » Thu Nov 23, 2017 11:50 pm

wurlycorner wrote:I have a JDM with original OEM full DSP setup, but I've never had it apart or looked round the system tbh so unfortunately I can't speak with authority here and am just commenting from 'basic principles', if you like.

It might well be an ignition live is missing and it isn't turning on the amp?

Car amps normally have a main power live and 'remote' signal. The main power live is what it actually uses for juice, remote is the signal that tells the amp to turn on.
In basic terms... Without the amp being on, the head unit is effectively pushing sound into the amp but there'll be nothing coming out, because the transistors will be in their off state (not letting current flow).
That being the case though, if you can hear anything, I'm surprised.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Fri Nov 24, 2017 5:28 pm

Post by **newkid** » Sat Nov 25, 2017 1:46 am

PreludeBB2 wrote:
wurlycorner wrote:I have a JDM with original OEM full DSP setup, but I've never had it apart or looked round the system tbh so unfortunately I can't speak with authority here and am just commenting from 'basic principles', if you like.

It might well be an ignition live is missing and it isn't turning on the amp?

Car amps normally have a main power live and 'remote' signal. The main power live is what it actually uses for juice, remote is the signal that tells the amp to turn on.
In basic terms... Without the amp being on, the head unit is effectively pushing sound into the amp but there'll be nothing coming out, because the transistors will be in their off state (not letting current flow).
That being the case though, if you can hear anything, I'm surprised.

wtf.

firstlude · Post by **firstlude** » Sat Nov 25, 2017 5:22 pm

is this another guess whats going on thread if so can i play

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Sat Nov 25, 2017 7:35 pm

firstlude wrote: if so can i play

No

firstlude · Post by **firstlude** » Sat Nov 25, 2017 8:08 pm