I tried fitting a new Blaupunkt headunit to my E30 M3 using the ISO-BMW plug harness. The unit switches on but I get no sound at all. When I turn the ignition off you hear an electrical sound like someone unplugging an amplifier, if you know what I mean.
Is there something special about the pin assignments for the M3? The plug on the car side fits the ISO-BMW which is stated as being for all BMW from 1991 to 1998, presumably thats all E36's.
Rob.
No sound
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chu346
- E30 Zone Addict
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Did you have a headunit working in there before?
Have you checked the manual for the troubleshooting section?
Are you sure there isn't a mute button on the headunit some where?
You should have two plugs on the cable, one for power, ignition etc which will be red, yellow, blue, black, orange
+ maybe more. The other plug is for the speaker outputs green, white, brown, and grey. Each of these will have a negative which will be green+black,white+black etc. Try wiring a speaker directly to these wires, be careful and don't short them out.
I don't have any experiance on M3's but can't see why they would be different, most cars are laid out the same since the 80's.
Have you checked the manual for the troubleshooting section?
Are you sure there isn't a mute button on the headunit some where?
You should have two plugs on the cable, one for power, ignition etc which will be red, yellow, blue, black, orange
+ maybe more. The other plug is for the speaker outputs green, white, brown, and grey. Each of these will have a negative which will be green+black,white+black etc. Try wiring a speaker directly to these wires, be careful and don't short them out.
I don't have any experiance on M3's but can't see why they would be different, most cars are laid out the same since the 80's.