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Let's get the forum buzzing again... (March 25, 2022)x
3:rd-Jul-2020, 07:44:19 (This post was last modified: 3:rd-Jul-2020, 07:45:21 by Rusty2009.)
Ok so for auto dimming have a look first you may find the power is already up in the roof, if not piggy back fuse or take up an empty slot in the fuse-board.
As for TPMS you can install a piggy back fuse or take up an empty slot in the glove-box fuse board.
It's becoming more common to come across the Astra with no rear board, yet they still leave the factory with TPMS, heated seats, dimming mirror etc, the most annoying part is there is no wiring information on TIS to cover cars without a rear board.