I have a new glow plug harness, OE part# 038971782C. It is a VW original part and fits the following:
Golf TDI MkIV (A4 chassis) w/ BEW Engine (2004-2006)
Jetta TDI MkIV (A4 chassis) w/ BEW Engine (2004-2005)
Jetta TDI MkV (A5 chassis) w/ 1.9 BRM Engine (2005-2006)
New Beetle TDI (A4 chassis) w/ BEW Engine (2004-2006)
Please pm me if you are interested. Asking $70+shipping.