Super Project '71: Part
15 Wiring
Harness and Electrical Components
By Ryan Lee
Price
At West Coast
Classics, our Super Project '71 was always in
good company. For most of its two days' stay,
the Super was flanked on the left by this
beautiful '50 Split (soon to be featured in a
future issue) and on the right by a
yet-to-be-finished Hebmueller.
| So you're at home minding your own
business when a package arrives at your
doorstep. Inside is what you've been waiting
for, but upon opening the box, you immediately
faint from fear. What did you see, nothing but a
complicated, confusing, confounding collection
of copper, connections and colored wires.
Pulling out the bag, the now uncoiling mess on
your workbench equals 392 feet of wires that all
have to go into you car. Like baby snakes, there
are 101 wires of various colors with 214 spade
connections, and that means there are 21,614
possible ways to install a wiring harness...but
only one right way. But don't worry, we'll help
you sort through the mess and find that one
right way. Granted, it isn't easy, but with
patience and a clear head, you can do it and it
should only take you the better part of the
weekend.
For added assurance, we
took our Super Project '71 to master electrician
Rafael Gutierrez at West Coast Classic
Restoration to show us the proper way to make
sense of all these wires. He's done it so many
times that a lot of his steps are second nature,
making the whole process look deceptively
simple. There are very few specialty tools
you'll need to make this work, as the basic ones
found in any nicely equipped toolbox will do the
trick. In addition, get a good copy of the
schematics for your year. The '71 Super is one
of the more complicated diagrams (as far as
Volkswagens are concerned), but not as bad as
the '73, which has the most wires, the most
connections and the most components to deal
with.
This might be perfectly
obvious to you, but for safety's sake, don't
connect the battery until the very end, and this
is only after you have double- and
triple-checked your wires, the connections and
the proper operation of all equipment. Start by
laying out all of your wires; separate each
harness from the pile and sort the individual
wires into groups based on size and location.
You've got your harnesses
ready; the schematics in one hand (for a copy of
Super Beetle wiring schematics, head to
www.vintagebus.com) and tools in the other.
You're ready. Good luck, go slow and be sure. To
provide you with additional help, on Page 23,
we've included here a few diagrams that will
help make sense of the original schematic, as
some of the wires' colors have changed (and
schematics aren't exactly the clearest documents
to those of us in the world who aren't
electricians).
Since we don't have a lot
of space on these pages (and the results of this
article could fill a book), let's get busy
hooking up the juice to our Super
Project'71.
Don't worry about the mass of
wires. Once separated and planned for, each wire
starts to make sense and the pile will recede to
nothing. |
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This is the blank canvas we
had to work with, the freshly painted underside
of the dash. There are a couple of extra holes
you wouldn't expect on a Super Beetle, such as
the cutout for the standard fuel gauge and the
oval hole for the gas heater. |
 |
This is a very important
step. When you're tearing out your old harness,
make sure not to remove the wires that go from
the engine compartment to the left rear quarter
panel. It is nearly impossible to reestablish
this channel if the wires are pulled
out. |
 |
 |
Rafael starts any wiring
project by taping the front of the main harness
to the old wires in the engine compartment.
Then, with the help of an assistant, pull out
the old wires while pulling in the new
harness. |
 |
Once the main harness is
pulled through, match up the last cutout with
the regulator and attach the wires #1 (connects
to the fuse box via #75), #2 (to generator
warning light on speedo), #12 (to the D+
terminal on the generator and #14 (to the DF
terminal on the generator). On the left is wire
#13, the ground. |
 |
The front half of the harness
is fed along the floor, under two clips and up
through the front "firewall." |
 |
 |
Don't worry, the carpet kit
will cover these wires. Don't forget this little
rubber grommet on the "firewall." |
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If you're reusing the bulbs
for the speedometer (and there's no reason why
you shouldn't), it's a good idea to test them
before they are installed. As well, you can hook
up the components (wiper motor, fuel gauge,
etc). |
 |
Since electrical components
corrode as easily as metal parts, you'll want to
give them a good scrubbing with solvent. Shown
here is the fuse box with the attached relay
console, a first for 1971 model VWs. |
 |
 |
The front of the headlight
harness consists of the headlight wires and the
connections for the turn signals. The right side
splits off and travels above the spare tire and
under the fuel tank cross member. Farther back
toward the dash on the harness is the cutout for
the master cylinder harness. |
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These are wires #17, #20 and
#21 for the right-side turn signal. The ground
screws into the body near the spare tire well,
shown here. |
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This is the connection for
the brake master cylinder. Though a harness is
included in the kit for the brakes, we decided
to reuse the old wires because of the original
plastic connectors (much like the connections
for the headlights). |
 |
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These are the original wires
for the dome light. When the headliner was
installed, a small slash was cut into the fabric
to retain this location. |
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Treat these wires similar to
the main harness, as they must be attached to
the new dome light harness and pulled through
the A pillar. |
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The headliner is cleaned up
and a new dome light is installed. The red wire
(#28) attaches on the left and ends up on the
fuse box, while the brown wire with the white
stripe (#30) connects from the right side to
door jam switches. The brown ground (#29) is
attached to the speedometer ground. |
 |
 |
With the old speedometer
nearby, it is easy to transfer the bulbs from
one to another, along with the plugs for the
lights that won't be needed. Included on this is
a new fuel sender vibrator which screws onto the
fuel gauge. |
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Probably the easiest thing
we'll be accomplishing on these pages is the
installation of the speedometer, simply two
screws. |
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There are many ways of
plumbing your wires as they come out through the
"firewall," but there is only one right way, the
way they did it at the factory and the way we'll
show you here. The main harness loops over the
fuse box while the headlight harness circles
around and through the console. |
 |
 |
This is the headlight switch.
Most of the wires can be attached while the
switch is out of the car, but for the full set
up, you'll need to install the
switch. |
 |
Because this is a general
dashboard for most all early Super Beetles,
there is no hole here for the headlight switch
in the pad, so one had to be cut. The reason is
that for 1972 and later Supers had the wiper
switch on the column and the light switch is in
its place. |
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The only special tool used to
install the various switches is this wrench with
a double pronged head. If you don't have one,
use needle-nose pliers instead. |
 |
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For most of the wires, if you
are replacing the spade connectors, you'll need
to clip off this retaining piece on the
connector, except for those wires that attach
into the relay switches. This clip holds them in
place. |
 |
These are the quad connectors
used to control the turn signals. They are
attached this way so that power and function can
act simultaneously, so your front and rear
lights will flash at the same time. Wires in the
connector on the left are for the right turn
signals while the connector Rafael is working on
is for the left turn signals. |
 |
After a thorough cleaning,
the wiper motor is returned to the body. It is a
good idea at this time to replace the rubber
grommets for the wiper posts. The wires for the
motor are straightforward and easily accessible.
With a 12-volt battery we tested to make sure
both speeds of the motor functioned
properly. |
 |
 |
Behind it goes the wiper
switch in the same manner as the headlights
switch. The water tubes to the reservoir tank
and squirter can be installed later. |
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In the rear fender wells are
the wires for the brake lights, turn signals and
reverse lights. The rear tail light harness is
attached to the main harness via single and
triple connectors. This whole system is hidden
behind the engine's firewall
material. |
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|
 |
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The silver ground strap will
be connected to the negative terminal of the
battery while the positive wire goes to the
starter. |
 |
This silver box is the relay
for the rear defrost. The wire to the actual
window contacts had been retained (the front
wire) but wire #42 on the left is the ground to
the body while the black wire (#6) goes through
the main harness to the defroster switch. The
thick wire in the foreground is wire #52 that
goes from the starter to the main harness (#11).
|
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As you can see, progress is
moving along behind the dash. If each wire is
taken one by one, slowly they will fall into
place. |
 |
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The door contact switches are
installed in the door jambs. Normally on the
left side is the buzzer unit that sounds when
the door is opened while the key is still in the
ignition. Since this is a most annoying sound it
will not be included in our plans. Plus,
original units rarely work after so many
years. |
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Four screws hold the turn
signal/horn contact plate. |
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This retaining clip holds the
contact ring on the shaft. |
 |
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Two small bolts hold the top
to the ignition housing. Once the top is off,
the ignition and steering lock slide
out. |
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To make the new turn signal
unit easy to install, the wires are splayed out
like this and fed down the steering column.
|
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It is installed with the same
four screws and spacers that were removed
earlier. |
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 | Conclusion: If you have
done everything correctly--we mean down to the
last wire, connection and component--and you
have triple-checked everything, install the
battery, connect the positive and negative
terminals and turn the key. If the lights go on
and the wipers start to swing, you've done it.
Be warned: There is no more a stressing moment
when you first turn the key, as it is the truly
the point of no return. Because fire is the
ultimate consumer, keep an extinguisher handy,
and if you are ever in doubt, don't chance it.
Bring it by West Coast Classic Restoration and
have Rafael take a look at it.
Next month we're going to
revisit our friends at Octavio's Kustom 1
Upholstery shop in Orange, Calif., and show the
right way to install the carpet/rubber mat kit
and the custom-made seat coverings. Until then,
stay Super.
| Sources |
Eastwood 263
Shoemaker Rd., Pottstown, PA 19464 (800)
345-1178 www.eastwoodcompany.com
|
G&M Schapp
12520 Magnolia Ave. Unit L Riverside, CA
92503 (909) 734-6382 |
R&R
Sandblasting 12520 Magnolia Ave.,
Unit K Riverside, CA 92503 (909)
738-1516 |
The Real Source
One Mid America Place P.O. Box 1248
Effingham, IL 62401 (800) 588-2844
|
Coker Tires
13187 Chestnut Street Chattanooga, TN
37402 (423) 265-6368 |
Top Line Parts
2910-A Miraloma Ave Anaheim, CA 92806
(714) 630-8371 |
Deuce Kustoms
1055 Ortega Way, Unit D Placentia, CA
92870 (714) 666-1030 |
Wolfsburg West
2850 Palisades Dr. Corona, CA 92880
(909) 549-0525 |
Classic VW
Specialty Rafael Gutierrez
Orange, CA (714) 778-0503 |
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