924Board.org

[Thruxton900]

Hi,
Im fitting a radio to my 924, but unsure which wires to connect to ?

the battery wire on the radio is yellow.
the ignition wire on the radio is red

What colour is the battery wire and what colour is the ignition wire in the 924?

thanks
_________________
1977 NA 924 sold in 2008.
1967 Porsche 912

[924aussie]

Can you post a photo of the wiring ?


Alan
_________________
green 924 .. 1980 rego 924PSH
1998 Mopar Neon ... sick
2003 Challenger / Montery 4WD
1995 Hyundai Scoupe ... sold
1998 Nissan Silvia ... sons back from OS he has taken it
BIG BLOODY MOTORHOME 300zx Sold
1980 Fire truck Sold

[Thruxton900]

Alan,

Sorry for any confusion, I just edited my previous post - hope it now makes sense

Im just after what colour wires I should be looking for, and where I can locate them near the radio console.

Ive found a red wire, I guess thats the ignition(accessories), but now need to find the battery wire.

cheers
_________________
1977 NA 924 sold in 2008.
1967 Porsche 912

[wombat]

I usually run new wires from the fuse box for a stereo but you can tap them anywhere that works its up to you.

RED:- 12V Constant (Conectes directly to the battery)
RED AND BLACK STRIPED:- 12V Switched (is switched on by the acc on the ignition)

These are what I have found in my car but as it is different to what you have mentioned already (red being switched) you should check out the wiring diagram to be sure.

If you need a color coded wiring diagram go to pelican parts they have one free online (but I just quickly tried to find it for you and failed) or get the haynes manual for a black and white one.
_________________
1977 924 2.0 Auto

[356speedster]

The wires might have been replaced in the past, so it's best to check them out with a multimeter or a testlamp.
_________________
1982 Porsche 924 na My 924 blog
1990 Porsche 928 S4 My 928 blog
1995 Fiat barchetta
2007 BMW 318d M-Sport
2010 Volvo V50

[RC]

There is an accessories terminal on the switch that activates when the key is inserted. However theres no terminal fitted to the connector on the 77s. Easy to get a 1/8" female lock tag connector and fit it in the appropriate hole. Then wire it to your red radio wire, via an inline fuse.

The wires Wombat mentions are 4mm2 (large) running to the ignition switch. Could tap into those but is probably easier and safer connecting to the fuse box. On the rear are some spare male pins protruding. Those marked H are constant 12V from the battery. So push on a female spade connector and run to the yellow radio wire. Definitely ensure there is a fuse in this line so no more fires.

The pins marked G are 12V switched (ign on) so you could hook one up to the red wire, via the fuse of course. If its a new stereo unit should have fuses fitted on it or the plug.

Roger

[356speedster]

When I did my stereo install last year I installed a new heavy gauge wire directly from the battery + to the stereo main intake and added a new fuse box to it. Then connected the ACC to the wire from the ignition switch.

Keep in mind that todays stereo head units draw a lot more amps than the ones back in 70/80's so a new main wire is a simple precaution to avoid getting the original wire harness burned out.
_________________
1982 Porsche 924 na My 924 blog
1990 Porsche 928 S4 My 928 blog
1995 Fiat barchetta
2007 BMW 318d M-Sport
2010 Volvo V50

[wombat]

[924guy]

colors can vary a bit from the schematics, use a test meter to be sure... remember, just putting the key in the ignition activates the "accessory" power in these cars. key must be completely removed to find the constant 12v supply wire.
_________________
Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha

[Thruxton900]

Thanks to all for the suggestions.

Got it running only with a constant 12V red wire I found, so therefore, have to take the radio faceplate out to turn it off.

I'll try and locate the ACC as suggested.
cheers
_________________
1977 NA 924 sold in 2008.
1967 Porsche 912