What is this
and where does it go under the hood?
thanx I found it under /near the master cylinder
04 Phillies Red Ranger Edge King Cab.3.0L v6
Stock wheels w/235/75/r15 Goodyear Wrangler Radials
Pioneer FH P8000BT,Pioneer CDX-1280 12 disk changer,TS-A874M frontspeakers and TS-A6872R rear speakers,explorer lighted visors(per wife's request)Cold Air Intake Mod.Explorer Dome light.Freshly repainted front clip,Pretty much still stock!