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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old November 16th, 2019, 16:32   #1
Baratis
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Join Date: Aug 2018
Location: Seattle, Wa
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Default Engine wiring harness compatibility

So lately I've been running into loads of issues with wires in the engine harness basically just disintegrating. I'm at the point where I just want to get the whole thing replaced. Haven't found any early alh harnesses on the web so I'm just wondering if the later harness is compatible. If not, where does one buy an earlier harness?
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Old November 16th, 2019, 17:44   #2
eddieleephd
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You need to call VW and ask the part number then search it

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Old November 18th, 2019, 08:50   #3
wonneber
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The only problem there might be if the harness you buy is as old as your it may be as fragile as yours.
If they wrap it up to ship it that alone could break up the insulation.

If you are up to it if you did get a used harness cheap enough you could peal the sheeting off and change the wires one by one.

You would need several roles of different wire, the tool to remove the wires from the sockets, a soldering pencil, and good solder.

I always swore by Radio Shack solder. (one of the few things they had that I liked)
Do not use acid core solder, use rosin solder.
Acid core is for plumbing.

You would be able to re-do the used one while still driving the car.
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Old November 18th, 2019, 11:01   #4
oilhammer
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The 1999 ALHs are a bit different than the later cars, and there is an early and late version of the '99!

I doubt either are still available new, but you can certainly call a dealer and have them run a locator:

038-971-610-AP or 038-971-627-A (need to verify with VIN, I just assumed your '99.5 is a German Golf with a manual like mine ).
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Old November 19th, 2019, 06:05   #5
eddieleephd
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Out of curiosity I searched the numbers and the second was available through VW. $200.00 not so bad. Even if it is different it should be similar enough to justify changing any plugs, or adding any wiring necessary to make it work...

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'02 1.8t Jetta Wagon Alh w/5spd swap, SB 21#SM DD, bew lift pump, 11mm IP, VNT17, Malone stage4 tune, 2.5"cat back st. pipe,Vr6 brakes, 2" lift, Panzer, Bilstein HD, fill tube ectomy, soon to be Bosio DLC 1020's PD_fuel_delivery TDI Search Plug release tool Howto terminal release tools VW/Audi
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