I am almost done with my install which is the Kenwood 7" in the cubby, JVC single Din dvd/cd and some other stuff.
First, the navi works great but when I watch a dvd with the volume low it's kinda okay with the volume up and bass thumping the image is all over the freaking place, whats up with this?

Second problem, I have to have the video cable from the radio to the Kenwood box for the screen connected otherwise, it does not power up.

Third, do you have to ground the wires to the car or the neg terminal on the battery?

 

Assuming you're running a seperate amp for your low stage, check the gain levels on it.

Doesn't matter as long as the spot your grounding you equipment has good reference to ground. Meaning, if you're grounding an amp to the trunk panel for example, as long as the resistance path to ground is low(0-10 ohms hypothetically speaking) you're ok. Obviously if you take a resistance reading of a spot on the car's chassis and it reads 1k ohms, you obviously better off finding another spot to ground your equipment.

I've probably complicated this answer too much, so an easy answer would be: no it doesn't matter.

 

No complication here, I am a Mechanical Engineer but I know a lil about electrical stuff. Anyway, thanks for the help.

ANYBODY ELSE CHIME IN GUYS, THIS IS GETTING ME VERY FRUTRATED. Especially the 2nd problem.

 

hahaha, 65 lookers and only 1 person has any idea how to fix. Basically I needed to ground the radio, navi, and monitor to the same ground. I called crutchfield and they guy told me this in less than a min.

 

I guess that is why they are "Crutchfield" and we are "my350z.com"...They get paid to research, track down and try to resolve your problem. Here, its Voluntary, helping another Z/G member...Actually, I would have called Crutchfield "ALONG" with posting here. I wouldnt have the patience to wait and see if anyone responded. JMHO

 

Why was it necessary to: ("ground the radio, navi, and monitor to the same ground.")?

I would think that independent grounds for the devices would work as long as each ground is adequate. I've never heard of a requirement to use a common ground.

--Spike

 

Well the guy said its called ground loop, I didn't ask to many questions after he told me how to fix it but it worked. I connected the radio, swi-pac, monitor, navi, and all the parking break switches together then twisted all that around a 8 gauge wire then grounded that. It's so clear ad the image is perfect now.

 

Okay... got it. It was simply that not all the devices were grounded properly. There is no such thing as a requirement for a "common/universal" ground since grounding is just that. They just instructed you on handling multiple grounds.

--Spike

 

+1

 

See I wouldn't say they were not grounded correctly because I had them all grounded to 3 different places and it did the same thing over and over again but for some strange reason when I hooked them all together and put them on 1 ground there was no problem. I hooked up many systems before and never had this problem so I am going to say that you had to be there. Now don't take that as me being nasty but he said it was called GROUND LOOP. Look it up and you will see that they in-fact have to be grounded together and just not a simple "not grounded properly problem". Check this site out, I think it was pretty good.
http://www.epanorama.net/documents/g...op/basics.html
Some crazy shi# I never even thought about.

 

Now not to beat this issue in the head but this statement as completely wrong.

There is no such thing as a requirement for a "common/universal" ground since grounding is just that.

Because although there is no requirement there is some type of standard or order you have to ground these devices.

 

False statement.

 

I think you are confusing terms.

A "ground loop" is a problem and not a solution. The link you refer to in your post describes problems with AC installations. You experienced a problem when connecting DC devices and establishing a good ground (and, that has little to do with the "information" link you posted).

The reason Crutchfield support had you connect all the ground wires from all of your DC devices together (and, then ground this single wire) is simply because the support person knew you had incorrectly established independent grounds for your DC devices. The easy way to solve the problem was having you connect all the ground wires from all the devices, and then ground the common wire. That way, and if it didn't work, the Crutchfield support person knows there is a single bad ground (and does not have to deal with multiple grounds, any of which may be inadequate).

I'm posting this follow-up to your message so that readers here are not confused by your inaccurate posting. Your statement: "Because although there is no requirement there is some type of standard or order you have to ground these devices." is nonsense.

--Spike

 

Man your really bored. Anyway, thats what I had to do to fix my stuff. Call it want CHAMP

 

Easy - your ground is bad. When you connect the signal cable up it's using the signal ground wire to pass power on ... bad bad bad. When the bass thumps the power requirement for the amp rises and overloads the WAY too tiny wire.

Wonder what the "P" in CPBE means?

(<---- see my user title)

 

twentyinrims,

Life is way too short to turn your friends into enemies. You posted a question, but did not provide enough information for anyone to respond with accurate information. Then you said: "hahaha, 65 lookers and only 1 person has any idea how to fix." That was a foolish statement. It is very offensive to someone like me reading your Thread and wanting to offer help. Then you posted a link that was not relevant (more wasted time for readers on your Thread).

I will continue reading this Thread for a couple of days, and after this, you go onto my ignore list.

--Spike

 

Look champ, I needed help and I do not recall you answering my questions, however to those that did I appreciate it. Funny how you are the only one that has been *****in$ bout nada. I've been checking your other post and now I understand why you keep crying. I do recall saying that I wasn't being nasty and check my threads fool, I by no means try to start this kind of stuff with anybody and I consider all people on the board my friend, however, I truly feel the need to voice my mind now because your fingers been typing a lil too much. I could give 2 $hits what you find offensive and 2 more $****s if your not my friend. My way of joking with the public by saying 65 lookers...was a joke, were you 1 of them? If you were why didn't you answer? If you were not, what's your beef? Just answer the question and move on. CHAMP, IF YOU ARE BORED, CHECK THE ANYTHING GOES POST AND MAKE BETTER USE OF YOUR FINGERS. With that Chump, I hope you understand now, I DON'T GIVE A $HIT WHAT YOU THINK.

 

Hey Champ where did I say it was a requirement? And do you have Z?

 

Wow. I love pissing contests.

Every grounding point has a different resistance, although slight. Even true earth grounds. Any electrical equipment that is wired together needs to be at the same ground potential, otherwise you get the 'ground loop', which basically is a voltage potential between the different ground points. It may be a very small potential, but even a little bit is enough to cause big headaches when dealing with sensitive electronics.

 

Whats up,
I am just about to start a install and need to know how much space there is behind the factory Nav screen/cubby. Do you think I could place a double din head unit (Japanese style twice the normal size) in place of the factory screen?

Thanks