Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
Anything and everything to do with maintenance, modifications and electrical is in here for the Mk2.
I had a quick look, but couldn't find part number for that on EPC.
I would just use a nylon/plastic plastic wall plug with the suitable ID and OD.
Cheers