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Ascenity · 02-13-2026, 04:18 AM

Obligatory “holy thread resurrection, Batman”.

I spent hours (maybe even days?) looking for this connector from places like TE Connectivity, LEAR, etc on / off for the past couple of months but found that absolutely no one sells it online & the search seems to be made harder by the fact that this is a 2-part plug that clips together, so it really seemed impossible to find, though I did find a solution.

I did a 2-way to 8-way conversion & while switching the electric base onto my driver’s seat, I noticed that the backrest’s motor loom plugs directly into the memory seat CU & that it can also be disconnected from the motor itself, so I checked the PET diagrams for this loom... sure enough, you can purchase this one particular harness (99661254400) separately (sourced directly from Porsche for ~£20).

The backrest harness only has 4 of the 5 pins populated but I found that I could de-pin a similar gauge wire (with the smaller JPT pin) from a VW connector pigtail (1J0 937 733, Orange connector, Red/Green wire) and use this wire to populate the final, 5th pin. I did Google this afterwards though, and you should potentially just be able to buy a “000979225E” repair cable from VW & use that. If you're only replacing the connector, you should just be able to de-pin this & pin your original loom into the new connector.

The only issue I ran into with this was fitting the connector into the seat’s memory control unit: there’s a little ridge/notch on the connector to stop you from installing it into the wrong hole so I just nipped this off with a razorblade & it seated perfectly into the CU.

Hope this helps anyone having this problem in the future

Couple of pics of the loom I made to retrofit the powered base:

02-13-2026, 04:18 AM	#9
Ascenity Registered User Join Date: Feb 2026 Location: UK Posts: 1	Obligatory “holy thread resurrection, Batman”. I spent hours (maybe even days?) looking for this connector from places like TE Connectivity, LEAR, etc on / off for the past couple of months but found that absolutely no one sells it online & the search seems to be made harder by the fact that this is a 2-part plug that clips together, so it really seemed impossible to find, though I did find a solution. I did a 2-way to 8-way conversion & while switching the electric base onto my driver’s seat, I noticed that the backrest’s motor loom plugs directly into the memory seat CU & that it can also be disconnected from the motor itself, so I checked the PET diagrams for this loom... sure enough, you can purchase this one particular harness (99661254400) separately (sourced directly from Porsche for ~£20). The backrest harness only has 4 of the 5 pins populated but I found that I could de-pin a similar gauge wire (with the smaller JPT pin) from a VW connector pigtail (1J0 937 733, Orange connector, Red/Green wire) and use this wire to populate the final, 5th pin. I did Google this afterwards though, and you should potentially just be able to buy a “000979225E” repair cable from VW & use that. If you're only replacing the connector, you should just be able to de-pin this & pin your original loom into the new connector. The only issue I ran into with this was fitting the connector into the seat’s memory control unit: there’s a little ridge/notch on the connector to stop you from installing it into the wrong hole so I just nipped this off with a razorblade & it seated perfectly into the CU. Hope this helps anyone having this problem in the future Couple of pics of the loom I made to retrofit the powered base: Last edited by Ascenity; 02-13-2026 at 04:21 AM.