My problem was solved (2006 VW Jetta wouldn't start). The relay was hard to reach, hidden under the dash behind a hard-to-reach light switch. Car wouldn't start / engine behaved strangely (second air pump problem) (no lights on dashboard) so I decided to replace the relay, it worked. Also had to replace a coil pack with 1 spark plug, not sure if the two issues are somehow related. Good product, hard to find (Autozone and others don't really have many in stock).
5-Pack 12V/20A Red LED Illuminated 3Pin HOTSYSTEM Rocker Toggle Switch SPST ON/Off Carbon Fiber Cover For Car Truck Boat Motorcycle
45 Review
Illuminate Your Ride With HOTSYSTEM'S Blue LED Toggle Switch - Perfect For Car, Motorcycle, Boat, And More!
37 Review
Gaming headset ASUS TUF Gaming H3 (90YH02AR-B1UA00) black-red
46 Review
Xiaomi Mi Robot Vacuum-Mop 2 EU, white
82 Review