Radio Install Question

Stan

Stan

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I bought a Blau Frankfurt stereo and will install it in my coupe.
http://i260.photobucket.com/albums/...A-A30B-64DEAE713AA6-3258-000002794CA6CA61.jpg

I went to a shop that installs car stereos this morning. I thought installation will be straightforward until I spoke with these guys. Looking at the picture below, you will see 4 holes where the speaker wires go. On the right you will see the red wire which assume is power and the fat grey wire that is the speaker wire.

http://i260.photobucket.com/albums/...0-B4E8-10FEF2679412-3258-00000279509197FE.jpg

1. is the red wire power? Those guys at the installation shop thought it was the ground wire
2. are there special plugs that go into the 4 holes of speakers?
3. assuming the red wire is not the ground wire, how do I ground the radio?
 
The red wire is always power, remove the bracket that is holding it and see if it goes into the chassis. Add a ground wire from one of the empty holes or on the side when you mount it. Blaupunkts came with paired plugs but a mini banana plug works also. Available at any electronics supply house, can't believe they can't figure that one out. Speakers need both wires, don't ground the speaker to the car, hook negative up with a plug. I can get you plugs if needed.
 
Red wire being power is as universal as red light being stop.
The ground is generally done through the chassis of the radio, either a wire with a washer
is screwed into the chassis (the location for that is probably the screw at the center of the 4 holes) or if you do nothing your ground circuit will be closed through the ground of the antenna connector (not a good practice).

Do you have 4 speakers? If so you can try the 4 holes, not sure about connector type.
I doubt the FM receiver is stereo, the speakers do not say Left and Right, so I guess you can keep I on the left and II on the right.

Nice radio, it looks so old when you turn it on you may hear news about the Vietnam war.
 
Arde said:
Red wire being power is as universal as red light being stop.
The ground is generally done through the chassis of the radio, either a wire with a washer
is screwed into the chassis (the location for that is probably the screw at the center of the 4 holes) or if you do nothing your ground circuit will be closed through the ground of the antenna connector (not a good practice).

Do you have 4 speakers? If so you can try the 4 holes, not sure about connector type.
I doubt the FM receiver is stereo, the speakers do not say Left and Right, so I guess you can keep I on the left and II on the right.

Nice radio, it looks so old when you turn it on you may hear news about the Vietnam war.
Click to expand...

The front actually says "Stereo" so I assume they wouldn't lie to me...
 
or upgrade

alternatively, you can send it to s&m electrotech (several threads on these guys), and for about $400.00 they will send you back a fully refurbished radio (including cleaning up the display, etc) with modern insides, 170 watts, and an ipod input.
 

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HB Chris said:
The red wire is always power, remove the bracket that is holding it and see if it goes into the chassis. Add a ground wire from one of the empty holes or on the side when you mount it. Blaupunkts came with paired plugs but a mini banana plug works also. Available at any electronics supply house, can't believe they can't figure that one out. Speakers need both wires, don't ground the speaker to the car, hook negative up with a plug. I can get you plugs if needed.
Click to expand...

Yeah, those guys made me nervous when they said the red wire was ground!
 
Blaupunkts have a model designation in addition to US/ other country designation. Usually K,L, M. First find out which you have.

Samba maintains a healthy library of original period radio manuals in PDF. http://www.thesamba.com/vw/archives/manuals/radios.php


The red is power. Confirm this by checking continuity from the chassis and the wire. ( Actually Violet) Yes, you need a fuse holder too.

Ground- usually the center hole of the chassis origianly had a fitting that attached to a bracket ( attached to a tray in a non-a/c E9. Just ground the chasis. ( AGAIN, MAKE SURE YOU HAVE A NEGATIVE GROUND MODEL.)

Speakers- you need two male dual spade plugs for two speakers presumably. Splice those to your speaker wires.
 
Is this the type installed orignally

Was this the stereo that was installed originally? I would like to bring my stereo back to orignal look.
 
It is a period correct radio, the tag on the side has a letter as Jerry pointed out that determines year. Each speaker has two wires, that is why there are four holes. Don't need paired plugs, separate ones will do, they make some with a right angle on them to give more clearance in the rear. The FM scale goes to 108 so it is a US Blaupunkt Franfurt radio.
 
HB Chris said:
It is a period correct radio, the tag on the side has a letter as Jerry pointed out that determines year. Each speaker has two wires, that is why there are four holes. Don't need paired plugs, separate ones will do, they make some with a right angle on them to give more clearance in the rear. The FM scale goes to 108 so it is a US Blaupunkt Franfurt radio.
Click to expand...

There are no tags on any of the sides other than the ones from Oldtimer-Radio indicating the service date of 21-2-12
 
Stan,

This website shows all Blaupunkt models by year. Some of the pics are small but your radio is on the lower left side I believe of this page. If you had the label on the side it would have a letter followed by the serial number, the model number which is 7 632 629 for the Frankfurt Stereo US would also be printed on the label. I do know that X is 66/67, Y is 67/68, Z is 68 and A and B represent 1969. Don't know if each following year is one letter only or not.

http://users.skynet.be/antique.autoradio/Blaupunkt/Blaup_72/Blaup_72_01.htm

By 1974 the radios weren't as pretty, more black plastic, and in 1975 the Frankfurt had a double row of buttons

I have a spare Frankfurt US but not stereo and it is 7 639 670 with the letter A meaning 1969.
 
Stan said:
The front actually says "Stereo" so I assume they wouldn't lie to me...
Click to expand...

It does.

I guess after 1945 Left and Right german designations fell in disfavor and they use I and II for the stereo channels...
 
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