YACAT: HU Not working, blowing fuse

[cchen]

I'm trying to install a new HU in my miata (old one got stolen)

I'm pretty sure the wiring is correct. I plug everything in, sound cuts in and out. The HU gets really really hot. Moving it around, I can get the sound to cut in and out. I have a bazooka tube hooked up also, wired to the HU's power antenna wire.

Then after a while the HU will blow a fuse, not the stereo fuse but the interior light fuse.

What could be the problem? I checked the connections and they're good, and I don't see any wires touching any metal....

 

[minendo]

Disconnect the bazooka tube. See if that helps.

 

[Spac3d]

How did you make your connections? Solder? Just electrical tape? It sounds like a connection is bad.

 

[kt]

Sounds like you got a short somewhere. The fact you mentioned your HU gets hot support this conclusion. Try to localize where the short may be at.. I would start out from the HU since that's where you can conclusively see evidence of a short circuit.

 

[cchen]

Ok, I disconnected the bazooka tube. Everything is taped. Once I attached the ground to the screw, it blew the fuse again. How can I find where the short is coming from?

 

[Wolverine27]

Originally posted by: Spac3d
How did you make your connections? Solder? Just electrical tape? It sounds like a connection is bad.

Typically, what is the best way to make the connections? I'm thinking about putting a new system in the wife's car.

Thanks.

 

[kt]

To find the short, it would help a lot if you have a multimeter. Check if your ground is good since when you connect your circuit to the ground it blews the fuse. Do you have any equipment to check voltage or current?

 

[kt]

Originally posted by: Wolverine27

Originally posted by: Spac3d
How did you make your connections? Solder? Just electrical tape? It sounds like a connection is bad.

Typically, what is the best way to make the connections? I'm thinking about putting a new system in the wife's car.

Thanks.

Do both. First solder the connection and then cover it up with non-conducting material.

 

[cchen]

Originally posted by: kt
To find the short, it would help a lot if you have a multimeter. Check if your ground is good since when you connect your circuit to the ground it blews the fuse. Do you have any equipment to check voltage or current?

i actually don't... is there any other way?

 

[cavemanmoron]

what the heck is a HU

like a radio?
a Hoover Under the dash??



replace the fuze with a c.b. {circut breaker}

 

[Shawn]

It sounds like a bad ground. Also I doubt that a HU alone would be able to handle a bass tube, if anything it would be underpowered. Unless you do have it hooked up to an amp.... (you said that you hooked it up to the HU's power antenna. )

 

[Shawn]

One last thing...... what year is your Miata? Do you have the headrest speakers? The wires on the driver's side of my '94 Miata got caught under the seat where it slides back and forth and got cut causing them to make contact with each other and caused the same problem you had. Also a lot of them were miss-wired from the factory.