Brights only

isuzu
headlights
rodeo

#1

I’ve replaced the relay and bulbs for my '92 Rodeo but only the brights work when I pull my dimmer switch. How do I fix this and what is the cause of this??


#2

Check the headlight switch with a voltmeter or ohmmeter.


#3

Be more specific. Are you turning on the headlights or they automatic? Have they worked perfectly for 19 years and suddenly failed “out of the blue?” Some of the Isuzus used a combination of 3 relays to control the headlights and regardless of the cause for your problem an accurate wiring diagram would be needed to quickly track the problem down. And yes, a volt meter or even a test light along with the wiring diagram will be needed.