Used eBay pump just installed. Unit came from California, zero rust. NO fault lights once system inflated. Front tends to dip, Arnotts from 2013. Car off road for now. Pain w marker lights terminals corroding, 2 of 4 shot. Vw 1993-1999 fits, not an easy find. Trunk keyless latch bad, trunk wiring looks OK, maybe fuses, or ugh, actuator. Still, overall a nice rig, I like that it's aluminum. Sprayed silicone w teflon around moving parts of windows, it helps.

Addendum/tip: to install the susp. Pump, i first cemented the upper special washers (3) to the support rods. That way, less to become dislodged/misaligned. I had some spray adhesive, and now those washers are set, never need to come down again. Hope this helps.

Thanks for the tips, romroc.