They make one for a rear camera addition that is a passthrough.
Yeah i know, however these cables are stupid prices in the UK, canāt really justify Ā£40 for a 54pin extension when i donāt know for sure that it will even work lol, AliExpress have them for like Ā£10-15 but would be 2022 then :ā(
Like thisā¦
SM Plug and Play Backup Camera Input Harness for Ford SYNC 2 or SYNC 3 8" Screen | eBay
Yeah, like Ā£40 here, which is fine, but i donāt want to buy it and it still not work lol, so trying to get a UK contact to lend me one 
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When you remove 54 and 53 it wil work i also tested this, i have also apim cable on stock send me a pm, just cover the alie expres price and shipping
Thanks but as you are not in the UK i suspect the wait / import will be too long/expensive.
)
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HS4-CAN on pins 41, 42 was not implemented in older vehicles, so not an issue. But if I had wires there, I would make sure the buss is not terminated to ground.
Pins 53, 54 were HS1-CAN. Depending on the vehicle, connected to several thingsā¦but with the wires connected affects the PCM and BCM negatively. I would guess APIM pins 53, 54 are now terminated to ground.
I have a Sync 2 spreadsheet that Iām checking. This will be for the folks who upgraded to Sync 3 and then want to go to Sync 4. There is a lot more wiring, some of it obsoleted by Sync 3.
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Considering what happened to @Alex16sās car Iām sure either 53/54 are routed ground or to some current sink on the board so that sounds plausible. HS1 = HS on the Fiesta Mk7.5, HS3 = ICAN/MMCAN on the Fiesta depending on the document you look at and the sort of have the same configuration as the Focus 3 but not exactly. I was hoping they did the same as with the MSCAN pins on the later Sync 3 modules and just remove the CAN Transceiver and let the pins float but they obviously didnāt do that for those two pins.
Looking at the CAN bus messages and data Iāve got so far for the Fiesta Mk7.5 it more and more looks like a mismash of standards to my eyes. The biggest problem with getting it to work with a CAN Bus translator (converting the necessary stuff to what the module understands) in between is the specifications of the bus messages which are hard to come by. Iāve gotten some data but far from all. If anyone has those Iād be glad to have them 
We shall see where that project ends but itās a lot less easy than I hoped.
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I agree. Since there is only one CANBUS left on the APIM, I would have through the others would be terminated, as this would be proper practice if the transceiver was still in place.
My cable has been delivered, 2.5 hours left of work then iāll do attempt 2 
Plug and play?
Somewhat, Im unable to get ucds or forscan to see it so canāt configure the asbuilt, trying to figure out why
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Make sure your on beta 3 last version of forscan do a clean instal, i did get asbuilts and could reprogram the module
On which car? Thanks
Do you have a link? I use ucds mostly
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