by xdave » Sat Aug 03, 2024 8:16 pm
Although I am not the OP here, I can answer the question asked:
Yes you can retrofit the bi-xenon HIDs to the 2019+ transit vans. There are two methods - no adaptions (you'll need to replace the engine bay fuse box) or by splicing into the dipped beam supply wire to each lamp and switching in a high power source via a relay. You will need to make the changes discussed via Forscan or similar coding tool for either.
By replacing the engine bay fuse box (referred to as the battery junction box) with a variant that has the built-in PCB relays for the HIDs you won't need to make any wiring changes and the headlamps will by plug-and-play with no errors. No wiring changes are needed because the halogen lamps still pass their low beam signal through that fuse box - the difference is that they are fed by the BCM and the HIDs have a separate supply. Which variant to change to depends on the current vehicle spec, but variants A# and B# have the relays (second letter is the minor revision). e.g. I switched from KK3T-14D068-GE to KK3T-14D068-BE, but have also seen an AC variant work.
If you want cornering lamps you'll need the headlamp module inside the dash above the glove box (on RHD), but you can go without if you just want the main lamps and DRL. If you don't have the connector for that module present, or have the cornering lamps already, you can splice one in using the wiring diagrams.
Transit Custom 2018 Limited (08/2015 MY), 2.0
Transit 2020 XLWB with Luton body, 2.0 RWD