Hey Guys,
Okay so the problem which I'm unable to sort out since last 3 weeks is about having no sound from my speakers while the head unit is working properly. And the sound comes back as soon I short the speaker wire with the bare metal. and i need to do this to right-rear speaker only, means it won't work if i do it with the left-rear speaker.
My Car is Honda Fit, I checked all the wiring twice, in fact thrice, ground is good, there is no factory amplifier and all the goods (head-unit & speakers) are after market. the fuses are good and head-unit is getting proper power, speaker wires are fine. yet every time I leave the car for a while, after coming back, i need to short the wire to get sound.
Would Highly appreciate if someone can put me on the right track to the solution.
Thanks
Okay so the problem which I'm unable to sort out since last 3 weeks is about having no sound from my speakers while the head unit is working properly. And the sound comes back as soon I short the speaker wire with the bare metal. and i need to do this to right-rear speaker only, means it won't work if i do it with the left-rear speaker.
My Car is Honda Fit, I checked all the wiring twice, in fact thrice, ground is good, there is no factory amplifier and all the goods (head-unit & speakers) are after market. the fuses are good and head-unit is getting proper power, speaker wires are fine. yet every time I leave the car for a while, after coming back, i need to short the wire to get sound.
Would Highly appreciate if someone can put me on the right track to the solution.
Thanks
Most head units have a bridged output amplifier IC and shorting the speaker wires to ground is likely to damage the IC, not make it functional.
With the head unit unplugged from the harness, what's the lowest resistance reading between the individual speaker wires going to the speakers and a KNOWN good ground?
With the head unit unplugged from the harness, what's the lowest resistance reading between the individual speaker wires going to the speakers and a KNOWN good ground?
What is the total resistance of the connected load? The head unit more than likely needs replacement but I would be concerned about how the speakers are connected to prevent a new head unit failure.
Thank you Pery & twilliar for jumping in. While trying to figure out the resistance, I observed weird type of wiring for rear speakers. Like the same head-unit was working fine with front two speakers but the problem started as soon the audio guy installed the rear speakers. The guy made a messy back wiring. the head unit is connected to factory stock wiring harness but at the rear, he stripped the factory wiring for speakers and made T-Joints to pull the wires for speakers. Can this type of wiring method cause the issue?
While I still couldn't get the resistance though, cause this strange wiring mess caused me waste a complete hour to understand what's going on.
While I still couldn't get the resistance though, cause this strange wiring mess caused me waste a complete hour to understand what's going on.
Thank you Pery & twilliar for jumping in. While trying to figure out the resistance, I observed weird type of wiring for rear speakers. Like the same head-unit was working fine with front two speakers but the problem started as soon the audio guy installed the rear speakers. The guy made a messy back wiring. the head unit is connected to factory stock wiring harness but at the rear, he stripped the factory wiring for speakers and made T-Joints to pull the wires for speakers. Can this type of wiring method cause the issue?
While I still couldn't get the resistance though, cause this strange wiring mess caused me waste a complete hour to understand what's going on.
While I still couldn't get the resistance though, cause this strange wiring mess caused me waste a complete hour to understand what's going on.
The output of a head unit is designed to go directly to the positive and negative speaker terminals (nothing going to ground or splitting to other speakers). Each speaker should have its own dedicated pair of speaker wires going back to the head unit.
Remove anything that doesn't follow that configuration.
Remove anything that doesn't follow that configuration.
on it. I'll take wires directly from the head-unit to speakers as factory harness looks pretty damaged itself. I'll also check the resistance. Can you tell me how much resistance should i be having to call it OKAY..?
The resistance to ground should be infinite (no connection to ground).
The resistance across the two wires for each speaker should read whatever the corresponding speakers read.
The resistance across the two wires for each speaker should read whatever the corresponding speakers read.
Yes Gioba, each wire is color coded. I'm not sure but i believe purple and white/grey are the ones for rear speakers. I'm going to remove the old wiring and run new ones from head-unit to speakers direct. I believe this would be the last thing to do before getting a new head-unit.
It really sounds like running a pair of wires to the back will be the easiest/best solution for you, but...
Most installers keep a known good speaker around as a test speaker. Just a small one with a foot or two of wire soldered on, so they can quickly connect directly to the output of an amp or head unit to verify there is good output.
If you have something to use as a test speaker, connect it directly to the head unit's rear speaker wires to bypass everything else and verify the head unit works properly.
Most installers keep a known good speaker around as a test speaker. Just a small one with a foot or two of wire soldered on, so they can quickly connect directly to the output of an amp or head unit to verify there is good output.
If you have something to use as a test speaker, connect it directly to the head unit's rear speaker wires to bypass everything else and verify the head unit works properly.