@sft3281: "Replaced my heater core this week on my 95 GTI VR6 after 140K miles.  While 
the dash was out did a little "cleaning" of the rats nest under my dash. 
Reconnected everything and tested all the electrical - except for the radio 
which was stupid - put the crossbeam member back on and started to put the 
dash back together. Plugged the radio back in and I only get the flashing 
red light on my stock Clarion head unit but the unit does illuminate. 
Pulled everything back out and checked the wiring connections - everything 
seems plugged in fine.  Starting to drive me a little crazy so bought a 
multimeter and started testing connections to the radio.  Ground test was 
fine but do not get 12V at the red/white and brown/red connections.  When 
key in should there be 12V at red/white and brown/red or should they act 
like a ground (continuity test).  There is 12V red/white at the alarm unit 
as well as the rest of the system - haven't tested brown/red yet.  Want to 
get this done as its driving me a little crazy!!!!!  Any insight would be 
appreciated."
    @sft3281: "No it really was after reading some very detailed instructions on 
<url>   Would have been a problem if I didn't know where the nuts 
holding the heater box to the firewall. Didn't have to discharge the ac as 
bentley suggests just took my time and felt around for the backside clips 
and removed them with a flat screwdriver.  Basically it only took about 2 
1/2 hours to remove everything and about 1 hour to put the core back in and 
redo the crossbeam.The only problem I had was removing the two shear bolts 
holding on the crossbeam - which was the most time consuming out of the 
entire project as I had to run to Home Depot for a cobalt bit to drill them 
out.  Removing the ton of bolts and screws was a little time consuming (but 
an electric screwdriver helped) and I expected a hard time removing the 
heaterbox clips but they all came off and were a snap to put back on without 
any broken plastic.  The flush was performed the weekend before and since I 
had bypassed my core there was no need to reflush.
What I could use is a little help with the fusebox connectors (yellow, 
black, blue, green and white) that sit on the fusebox.  When I pulled the 
crossbeam I decided to tidy up the wiring rat's nest and I pulled out the 
connectors to untangle the harness.  Thinking everything was color 
coordinated I plugged them back in.
What I'd appreciate if any 95 GTI owners would have is what wires plug to 
where - plugged all my grey/blues and blue whites together (both three) and 
plugged the black/yellow (2) but have problems with my greens, blacks and 
whites - need to verify the number and connectors.  Also in the mix is a odd 
black/blue and black wire with a green plug small plug that goes into which 
block the green or the black?  The wire is solid black.
Seriously I checked the circuit to the radio and cig lighter a few times 
with a multimeter and I get continuity but no 12V in the red/white wires. 
Unless my connections are really off or I fried the alarm module or computer 
which gets and puts out 12V on the red/whites something is really messed up 
on the fusebox or I'm missing something somewhere.
I'd really appreciate some help on this one - any insight would be helpful."
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