how do i check the relay?

04 Vibe.So one day all of this craps out at the same time.coincidently after a trailer hitch install.items not working.- Rear wiper- Rear Hatch Door Lock- Rear Driver side power door lock- Recirculating vent button- rear defrost.i suspected the trailer hitch tech fried something.b cuz all this happe...

hey thanks for the warm welcomes.thanks bluerdge for all the advice.im gonna get the dealer to look at the batt. and water pump b4 i take possesion.and its 30,000kilometers, thats like 16,000miles

well just got back from the dealershippicked up a 2004 grey vibe.only 30,000 kms!!!nice site, and im sure ppl on here wont be a holes like the honduh sites i formerly a member of.rip honda civic.