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Porsche_911s's Avatar
 
Join Date: Aug 2004
Location: Texas
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Eliminating the external voltage regulator

Once you have eliminated the external voltage regulator on a '74, are there any wires that can be removed from the engine wiring harness ? I was in the process of getting rid of the CIS wires so I thought I'd ask.

61 Blue (stays)
B+ Red (stays)
D- Brown (???)
DF Black (???)

I read the tech bulletin and it says to cut off the black DF wire. So is that the black #13 PIN wire in the harness?

1) I am not sure about the black wire.

2) D- Brown wire in the engine harness connects to a solid brown wire in the car harness?

Thanks!

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Stephen
Friendswood, Texas
'78 Targa
w/ '86 930/20
w/ '74 915/06
Old 02-28-2006, 06:22 PM
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Location: TX USA
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Stephen,

Yes, the Black wire can be removed from the engine wiring harness.
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Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'
Old 02-28-2006, 08:18 PM
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Warren,

Can the D- brown wire be grounded any where on the car? The reason I ask is because the wiring harness had been messed with on the car side. I am unsure which PIN the brown wire should match with. It was going to my tach (you actually helped me in another thread fix that problem). So, does the brown wire match up with a brown wire in the harness? Does the brown wire go to a device or just a ground on the mounting plate for the 14 PIN connect & CDI box?
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Stephen
Friendswood, Texas
'78 Targa
w/ '86 930/20
w/ '74 915/06
Old 03-01-2006, 05:39 AM
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Anyone? D- Brown wire in engine wiring harness, which PIN / COLOR wire does it go to?
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Stephen
Friendswood, Texas
'78 Targa
w/ '86 930/20
w/ '74 915/06
Old 03-01-2006, 04:37 PM
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Join Date: Sep 2000
Location: Sunapee, NH
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if the wire is all brown , always german ground!
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Damon @ SERIES 900.com
Sunapee NH
several 911 variants
Old 03-01-2006, 06:40 PM
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That is what I thought. I cannot find an all brown for it to go to in the 14-pin connector. If it's just a ground I'll probably just ground it to the 14-PIN connector housing.
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Stephen
Friendswood, Texas
'78 Targa
w/ '86 930/20
w/ '74 915/06
Old 03-01-2006, 06:42 PM
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Current flow diagram available here in the pelican site, german wiring mantra is brown=ground

generous motors tended towards black, but no firm rules as the germans, veeery tekneekal!!

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Damon @ SERIES 900.com
Sunapee NH
several 911 variants
Old 03-01-2006, 06:48 PM
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