***Engine noise / alternator whine fixes.***

[wilzyx 5,000+ posts]

wewt!

Click to read more...

 

[reneeb7363 10+ year member]

BUMP!--- make this a sticky??? Good Info... Im gonna try this with my Pioneer head unit... I have a lil bit of noise that I have NEVER been able to get rid of!

thanx bu-uddy!! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[wilzyx 5,000+ posts]

do the same rules apply for the h/u ground, no longer than 3 feet?

 

[luvinthebass 5,000+ posts]

That's what i did with my Pioneer Head unit and it worked, no more whine at all, **** the ground loop isolators

 

[zthumper 10+ year member]

Sticky fo sure!

 

[gl0ck 10+ year member]

don't want none of this:

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

OMG look at that sweeeeeeet ground..

 

[Chevyaudio 5,000+ posts]

Thanks for the compliment. But I know that I'm going to get flamed for this somehow //content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif. It happens every time.

//content.invisioncic.com/y282845/emoticons/hitbybrick.gif.68a672fae224041f00769a97c2c1bf2d.gif

Stupid B1tch...

you=//content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif

 

[reneeb7363 10+ year member]

lol... I was told to watch out for mike... NG already wuvs u! LOL!! //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

seriously tho.. this is great info... did you actually see someone ground to the jack mount?

 

[chartman18 10+ year member]

How does one connect RCA cables to the head unit through that if the wire looks like it will fry everything up or make it not fit?

 

[Ninja_Turtle 10+ year member]

I just grounded my pioneer RCA on Saturday and it killed the alternator wine completely.

 

[Ninja_Turtle 10+ year member]

I just stripped two wires and tape them with eletrical tape to the metal parts of the HU RCA output, and and taped the other end to the HU metal backing. Voila the problem was solved.

 

[Thnking 10+ year member]

If the problem is alternator whine or noise through the speakers, almost 100% of the time it's due to unequal resistances between grounding points with electronics, if it's not a failing piece of electronics.

RCA's aren't going to pick up EMI next to a car's DC lines.

A person's best friend when doing their grounding for their car's stereo is a multimeter. The grounding point locations should be within similar resistance values of each other, I would shoot for differences under .1ohm, and as low as possible. Sometimes with older cars or poor body structures, the best route is to simply run new grounds back to the battery.

Also grounding lengths don't need to be kept at any specific length, what matters with any cable is the resistance vs current. I don't like the wire ga selection sticky on this forum. The best way to determine wire ga without using a clamp, is to add up fuses on the amps and use a voltage drop calculator or wire resistance chart. Select wire gauge with a very small voltage drop based on the total fuses for each wire run, under .2Vdrop or lower.

 

[helotaxi 5,000+ posts]

Usually its a poor HU ground causing noise. Actual operation problems with the amps are usually amp ground related.

 

[the727kid 10+ year member]

How would you ground a Pioneer AVH5700? The RCAs are a plug that has 3" RCA wires coming out.

 

[rocky 59 5,000+ posts]

solder wire to the rcas coming out of the HU. solder wire right to the shielding and then ground the wire