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TDI Conversions Discussions on converting non TDIs into TDIS. More general items can be answered better in other sections. This is ideal for issues that don't have an overlap and are very special to swaping engines.

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Old November 12th, 2018, 16:53   #91
Join Date: Jun 2003
Location: Watertown, MA, USA

Originally Posted by blkhatsilhouette View Post
Hey everyone, I'm in the middle of swapping an '00 ALH/5 speed into an '03 1.8t/automatic (both were jetta's).

I'm having trouble with the T14a connector that the pin out is shown on this thread. In the 1.8t jetta, I'm missing pin 3 (green) and pin 10 (black with green stripe).

I also see on the diagram that pin 10 should go to the load reduction relay. I traced this black/green stripe wire to fuse 10 (small fuses) on the 2000 wiring, but it doesn't seem to exist on the 1.8t. The bottom blade of the load reduction relay traces continuity to fuses 20, 21, and 36 on the 1.8t, but those also exist on the TDI, so I need that extra wire...
Pin 88 of the ECU goes to pin 10 of T14a which then goes through a 5A fuse to the fat black wire with red stripe that goes to the load reduction relay. Your 1.8t jetta will not have that 5A fuse so you'll need to add it. You could probably just add an inline fuse - that's what I did to make my glow plugs work on my ALH conversion.
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