12v fused cigarette lighter plug w/ LED – 16AWG, 15A Fuse – TekShack BPC900300014 The 12V cigarette lighter plug P12AX - Twinpoint Fused Cigarette

These differences are covered in detail in this SwEm Tech Article: 123GT Consideration of Lighting Differences Important: Note also, that the 123GT was one of the first Volvos to be equipped with an Alternator from the factory, and the factory recognized an Alternator must never be electrically disconnected while engine is running, that they thought it was important enough to add a Big Red Sticker under the hood stating that...but then they also built-in a bit of a potential weakness into the wiring harness, which might allow this very thing (Alt output is routed by way terminals at the secondary FuseBlock)

This consideration will often depend on the purpose for the drug test

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There are several more traditional dad-drops in this episode, this songs too good to ignore