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Wiring Harness Questions and Mailing Instructions

 

 

Planning on sending us your harness or ECU? Take a quick glance over this page, making sure that you have everything sent to us at the same time, to help expedite your order.

Please fill out our Mail In Request Form.   Mail the package with the form inside, to the address listed on the form..

What type of harness do I have?

Most pre 1999.5 engines

  • Engine Control Unit (ECU). (Most mk3)
  • mk3ecu
  • Harness from Engine to ECU.
  • mk3harness
  • Accelerator Pedal connector with at least 10 cm of wire. (TDI ONLY)
  • mk3mk4 pedal (Left: Mk3; Right Mk4)
  • If you want to convert to a mk4 style pedal for your mk3 TDI just let us know, its easier to get replacement pedals, and we have a bolt in bracket from your MK4 to MK1 accelerator pedal.
  • mk1DBW1

 

Engine Control Unit Engine harness Accelerator pedal plug (MK3 style)

mk3tdiplug

 

If you are missing some of these items, no problem! We usually can supply them to you at a reasonable cost.

 

Most post 1999.5 engines

  • Engine Control Unit (ECU)
  • mk4 ecu
  • Large connector ECU Harness, has 4 or 5 colored plugs to rain tray plenum, (or under the beetle dash cap)
  • mk4body harness mk4bodyharness2
  • Small connector ECU Harness has the majority of the connections to the engine.
  • mk4engineharness
  • Glow Plug Relay (TDI Swaps only) with it’s base and at least 6″ of wire. (pictured is an 02-up, pre-02 is under the dash)
  • 02up glow plug relay
  • Accelerator Pedal connector with at least 6″ of wire. (pictured on the left is the mk3 connector, Right is the mk4 connector)
  • mk3 mk4 pedal harness

If you are missing some of these items, no problem! We usually can supply them to you at a reasonable cost.

Other parts you will need You will need these parts to complete your installation. However, we don’t need them to work on your wire harness, so please don’t send these parts to us, unless you just enjoy paying for shipping costs..

  • Accelerator pedal (mk4 on the right, mk3 on the left)
  • mk3mk4 pedal
  • Turbo control valve (N75) (gas 1.8t on left, TDI on right)
  • gasn75 tdin75
  • EGR control valve (N18) *
  • tdi egr tdi egr asv
  • Intake Manifold Flap Valve  *
  • tdi asv
  • Manifold Absolute Pressure (MAP) sensor
  • tdimap
  • Intercooler
  • tdiintercooler
  • Mass Air Flow (MAF) sensor *
  • tdimaf

 

 

* To make your installation process simpler for you, we can delete these items from your harness. However check local laws before doing so as you may not be able to pass certain emission tests.

 

How to remove your harness – 

 

 

How to correctly send us your wire harness

 

The fastest and cheapest way to send a wire harness is with the Post Office. If you live outside of the USA, you will more than likely have to fill out a customs declaration form, this process is quite simple! An important note: you are not selling us these parts, rather you are sending them for repair and to be returned! So when filling out the form simply write: Automotive wire harness sent for repair, no commercial value. In the value field, put one dollar. In the insurance field, insure it for whatever amount you feel comfortable with.

To help us plan our time around the arrival of your harness please forward the tracking information to our email.

If you insist on sending with a courier such as UPS / Fed­Ex you will be 100% responsible for all fees incurred.

What happens when the harness gets here?

Before starting the harness we will email you to ensure both parties are on the same page. If there are any missing parts or concerns that we may have with the harness, this will be discussed before any work commences. The harness will be sent back and labeled as a “repaired automotive wire harness.” Again, if you have any questions or concerns, please let us know!

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Summer Software Sale

It’s time for a summer sale, if you are thinking about a mk4 motor swap for your mk1, we are offering 20 percent off your wiring harness work or ecu tuning when you purchase an integration kit from us. This offer is good until around mid August. Purchase of the integration kit must be between July 10 and August 15, your harness can be scheduled up to a month after that. image image

 

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How To Install Our Parts by VWDIESELNET

Ryan over at VWDIESEL.NET wanted to build a tdi swapped caddy using our parts.  He went way beyond the call of duty and made a set of videos documenting the various parts used, and how he installed them.  Check out the website for more awesome videos on keeping your VW on the road.  http://www.vwdiesel.net

 

Part 1 : Parts Overview

 

Part 2: Mounts and Engine Prep

 

Part 3: Shift Rods, Cable Clutch Kit, Exhaust

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Its Grumman time

Check out our build on our new shop truck! Its a Grumman Olsen Kubvan

Click the pic or go to ORIGINALS>1983 GRUMMAN

kubvan 017Kubvan on the Mobile Dyno at SOWO14

 

 

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MK1 02J Transmission Mounts Are Here!!

They are here, laser cut, plated and ready for your swap. Includes a boss for our eurovan cable conversion.

 

mk1 02j mounts includes cable boss for eurovan cable clutch kit
 
 

 

 

 

 

 

 

Also arrived, another shipment of our mk1 02a/j shift linkage kits

These give you a great alternative to trying to fit the cumbersome cable box into your mk1.  No cutting or welding required, you keep the stock linkage in the tunnel.  No console modification, no drilling holes in your firewall or dealing with pinched cables from the very sharp firewall bend on the mk1 cars. Shortens the throw over the cable setup..

mk1 02a/j transmission swap linkage kit
 

 

 

Click the pictures for pricing, or go to SERVICES >CUSTOM PARTS

 

 

 

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Projects for customers we have been working on

Over the past couple months we have finished a few projects you may be interested in.

 

1983 Rabbit GTI o VR6 Swap

We took a tired 1983 GTI and added 1.5″ of steel to the rear arches and 1″ to the fronts, had it painted factory black, and stuffed a VR6 into it..

 

DC 016 DC 015 DC 014 DC 018 DC 017

 

 

 

An early westy front end was cloned from parts we had and the existing core support.

 

 

 

 

 

 

 

 

 

 

 

 

 

Stewart Warner gauges set into a mk2 dash panel lets the owner know what is going on under the hood.

 

 

 

 

 

1990 Jetta Coupe

We rescued this coupe with a blown headgasket on its VR6 swap.  After looking the car over we decided it needed a complete redo.

iphone 195 iphone 194

 

 

 

 

 

 

 

Rebuilt the motor with new rings stock pistons and new bearings, head was sent off to the machine shop for a refresh, and new chains were installed.

 

iphone 176 iphone 177

 

 

 

 

 

 

 

Car was then disassembled and sent off to paint where it is almost done and ready to come back to us for final assembly.