[urq] Elec usage needs (x-post)

Brandon Rogers brogers at terrix.com
Tue Sep 5 15:30:37 EDT 2006

yeah thats what I'm trying to do but don't know the wattages...hence my
little list....  so c'mon Dave cough up some numbers for me
1200W won't get very far - luckily things like the 500W fan don't come
on full blast - so I'd really like to know what it uses at Speed 1 or

-----Original Message-----
From: djdawson2 at aol.com [mailto:djdawson2 at aol.com] 
Sent: Tuesday, September 05, 2006 12:21 PM
To: brogers at terrix.com; 200q20V at audifans.com; urq at audifans.com
Subject: Re: [urq] Elec usage needs (x-post)

Add up all the wattages of the significant players, then divide by 13.5
(typical alt output voltage), and that will give you the total amps
A 90 amp alternator should optimally be able to handle about 1200 watts
of gear before it starts to draw on the battery for backup.
-----Original Message-----
From: brogers at terrix.com
To: 200q20V at audifans.com; urq at audifans.com
Sent: Tue, 5 Sep 2006 10:00 AM
Subject: [urq] Elec usage needs (x-post)


In the middle of swapping the alternator over to the drivers side to

make room for a 944T intercooler, mounting it (the alt) to the 2B

bracket under my A/C compressor.  Looks like I have to use the 4kq/CGT

alternator instead of the 200 20V alt - bummer since the 4kq one is only

90 A instead of 120 A.  I went to a local place to have the 4kq

alternator rebuilt and hopefully upgraded to 120 A.  They said



Anybody know differently?  I am ok with swapping all internals but I

must retain the mounting housing.


I am also trying to get a real handle on electrical component

requirements - any input appreciated.  Here is my list of components -

several have different stages of use (ie fans, etc) so any knowledge on

the usage range would be very helpful - 


I am very very curious what the usage is for the the Cooling Fan Stage 1

and  _especially_ Stage 2...


headlights low 160 W

brights  400W I think

all other lights (dash, tail, parking etc)  - ?

Cooling fan (200 20V) Stage 1 - ?

Stage 2 ?

Stage 3   500W I think - luckily never needed so far!

blower motor (off plus 4 settings)

heated seats (6 settings)

rear defrost

wiper motor

stereo  135 W

Motronic ECU   ?



forgetting anything major?


thanks a ton!



'84 urquattro 20Vt

'01.5 S4

'98 A4 1.8Tq



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