Pioneer GM-3000 Wiring - Page 2 - diyAudio
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Old 31st December 2007, 10:14 PM   #11
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It's unlikely that they would use blue for a shield ground. The shield ground would be the braided outer part of the RCA cables going into the DIN plug.

In the DIN plug, you would have 4 connections (pins 1, 2, 3 and 5).

You wouldn't jump the grounds together. The ground tab doesn't need to be grounded. The shield ground will be grounded by the RCA cables from the head unit.

The red acc wire could probably be safely powered by the remote lead from the head unit but I'd insert a 1/2A fuse to protect the head unit. The red acc lead powers quite a few circuits in the amp and I'm not sure how much current it will draw.
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Old 10th September 2008, 07:29 PM   #12
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Hello guys, I've just joined the forum having found this topic via Google.

I have three vintage Pioneer amps, GM series: 1200, 2000A and 3000. the first two came with no looms or DIN cables so I've not been able to use them. the 3000 does have loom and cables and with the great info in this topic I now know whats what with its wiring needs.

Is it possible to buy suitable DIN cables for these amps does anyone know?
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Old 10th September 2008, 10:56 PM   #13
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You'll likely have to buy the DIN connectors and make up your own cables.

When you buy the connectors, there will be 45 and 60 connectors. You need the 45 connectors.
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Old 12th September 2008, 01:54 AM   #14
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Hi Perry,

thanks for posting.

I've purchased PDF downloads of owners manuals for my amps from a website called Manuals in PDF. So now i know which pins to connect to, in the amp's loom connector.

As I don't have the original plug and loom to slip over the pins I need to find a suitable crimp connector that will do the job.

I once saw some suitable ones on ebay, I'll try to find them again.

I'm really looking fwd to trying to power up these amps. I bet some have seen no use for donkeys years.
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Old 12th September 2008, 10:47 AM   #15
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The 4 pin connector on these amps almost always has broken solder connection. Check them if the amps don't power up.

If I remember correctly, these amps had a lot of problems with broken solder connections. If you have intermittent problems, they are likely the cause.
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Old 13th September 2008, 02:38 PM   #16
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Quote:
Originally posted by Perry Babin
The 4 pin connector on these amps almost always has broken solder connection. Check them if the amps don't power up.
What a bummer. I just tried to power up the GM1200 and the GM3000 but neither will power up. I hooked up all the pin connectors per the Pioneer manuals but no joy. How do you check for the broken solder problem you mentioned?

regards,
Philip
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Old 13th September 2008, 02:38 PM   #17
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Updated post:

Hi Perry. A miracle has just happened. I've got the GM3000 working from one of its twin DIN cables. The DIN cables may have been modified from original spec. The DIN cables end in RCA females and have been fitted with additional wires labelled for Gnd, Remote and Illumination. This means I can connect a modern head unit with RCA outputs to this amp. Did Pioneer sell RCA to DIN convertor cables like this?

When I first tried to power up, nothing happened. Afterwards, I was removing the DIN cable carefully when the additional wire for remote simply fell out of the DIN plug. When I tried the other DIN cable the amp powered up.

How do re-attach the detached cable into the back of the DIN plug?
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Old 1st September 2009, 08:43 PM   #18
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Thanks man! I search the whole world for this....
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Old 21st December 2009, 08:21 PM   #19
V480TI is offline V480TI  Netherlands
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Default Pioneer GM 3000 specs

Hi, today I purchased a GM 3000 for 30 Euro's.
But I cant find a manual anywhere.

Maybe somebody knows what the specs of this amp are ?

Is it 75 Watt RMS at 4 Ohm or is it less ?

Thanks in advance,

Greetz
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Old 13th April 2010, 05:49 PM   #20
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Is it 4*75 Watt RMS or 2*150 Watt RMS or 1*150 Watt RMS and 2*75.
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