Glow Plug Harness - 4 wire - Late Mk4 ALH (2002-2003 Golf/Jetta) (2001-2003 New Beetle)
OEM glow plug harness for 2002 and later A4 TDI [ ALH engine ]. If all glow plugs test good, and the glow plug relay is work, typically the harness has deteriorated internally, and replacement is necessary.
Golf TDI MkIV (A4 chassis) w/ ALH engine (2002-2003)
Jetta TDI MkIV (A4 chassis) w/ ALH engine (2002-2003)
New Beetle TDI (A4 chassis) w/ ALH engine (2001-2003)