No head lights, No inside lights, Nothing. But HORN sounds. I can honk.
I replaced the old battery with new one thinking battery problem.
Nop. It's still same.
I am lost. Can you help me out to find out the cause of this problem ?
FYI, It's Honda CR-V 2004.
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three suspects 1) horn, 2) horn relay, 3) horn switch.
eliminate the first suspect by disconnecting the horn from its wires and jumping it right to the battery. horn is usually found by looking around in front of and next to the radiator or below a head light. if it honks it is good, if not replace it. if it honks with jumper then go buy a new horn relay at a parts store. locate the old one by finding the fuse panels as described in your owners manual, the relays are in there too. unplug the old one and plug in the new one. if it works you win, if not you are looking at replacing the horn switch which is inside the steering wheel cosmetic cover. on pre-airbag cars this is usually not hard to get at, just a bitc* to find a new one for a car that old.
note some 90s GM products had a horn with a built in relay. this means you have to replace it with the exact same thing, not an off the shelf parts store horn. if the horn has 3 wires in connector it is that type.
there are 3 parts, the horn, the horn relay, and the horn switch. horn relay is simple to check by replacing it with another from a parts store. it is plugged into a fuse panel inside the car or under the hood, look at your owner's manual for exact location. the horn can be disconnected and then jumpered directly to the battery. an old extension cord with the ends of the wires bared makes a find jumper cable. horn is usually located next to and in front of the radiator. if the horn honks it is good, if not you can buy a generic one at a parts store. if it is not the horn nor the relay then you are looking at replacing the switch inside the steering wheel and this is generally beyond the scope of a non-mechanical person.
horn, relay, or switch. you can jumper the 12V car battery directly to the horn's cable connectors,
if it does not honk, go get a new horn. you can buy them new cheap at parts stores or get one out of a junkyard even cheaper. if it honks with 12V applied, then you need to replace the relay. look in your owners manual for fuse panel locations. the inside of the panel lid will have a legend telling you what is what. if you replace the relay and still not working then your bad guy is the switch inside the steering wheel. good luck with that, you may want to screw a generic push button to the dash board to replace it.