
▲ 6 r/E30
Part identification
What’s this big black plastic box under the dash?
u/Dieselboy23 — 5 days ago

What’s this big black plastic box under the dash?
Hey fam, 89 325i here.
I have flickering intermittent power to my motor blower, power windows and power side mirrors. It’s driving me crazy.
I recently replaced the ignition switch but still have issues.
Any thoughts? Anyone know where these accessories are grounded or anywhere else I should check?