That wont work! That's for an 8V the repeater is built into the wing mirror cover on the 8P.
You need to remove the glass (just clipped in) plus the 2 wires for the heating element, then remove the motor (1 screw in the centre plus a wiring connector) then there are around 5 additional screws if I remember correctly then you can unclip the mirror cover and one wiring connector for the repeater. The repeater will then slide out of the cover and you can slide your new one in, needs a bit of force to click into place. Also plastic trim pry tools are really useful for this job. Screws are tiny Torx ones cant remember the sixe