Temp gauge failed
So I installed a new system in my girls 00 Accord EX VTECH cpe. Now the temp gauge isn't working which caused (I'm assuming ) the check engine light to come on. I checked fuses and relays but found nothing. Ran the Amp power thru the passenger side of the firewall, but didnt hit or disturb anything existing that I saw. Then again-I had a 'certified' dipshit trying to help me... Anybody got something for me???