Anyone know of a safe way to ground rca shields. From what I have read, you simply solder a wire to the shield end, loop it back to the deck and ground it. Using a 3amp fuse in the loop. Were having issues with interference on a friends 95 MR2. Expensive rcs helped reduce the noise being picked up by his electro hydrolic steering system (if anyone is familiar with those) Which is confirmed by the fluctuation in sound when turning the wheel only (not rpms) and also when the pump turns off, the noise goes away. We have routed the wires as far away as possible from the pump and servos itself but this damn thing has some sort of giant vortex of a magnetic field going around it or something. If you read some mr2 forums, its an issue with anyone's install in the front trunk. But there have been some successful installs, which we have tried everything. His HU is a double din pioneer AVIC 411 which after researching, found out pioneer has issues with rca sensitivity. Everything in his car is brand new, not but a few days old. Weve got the noise down to what I would say is about 10% from the 100% of loud screeching it originally was. And is ONLY present in the tweeters (fosgate T152-S components, ran off a fosgate 400.4 amp) Amp and crossovers mounted in the front trunk of the MR2. Monster 16g speaker wire (could this be the problem? It was an off the shelf roll of wire) all new from front doors to the FRUnK (front trunk) We want to get the last bit of noise and I think maybe grounding thise stinger rcas would do the trick? If not, maybe a ground loop isolator? Heard those steal power from the HU and are to be considered a last ditch effort though. Any thoughts or help is appreciated.

Oh, all grounds have been checked, cleaned and relocated to numerous areas (thinking it was a ground loop noise) only place not tried was grounding straight to the battery, since its up front. Power wire does not run with any other wires, rcas and speaker wires come through the same hole in firewall but didnt think that was an issue. 3 types of rcas have been tried, some were better than others as far as noise. We even ran them outside the car as a test and the noise is still coming from the power steering. It's got us ready to abandon the hours of time and lots of money building a very nice quality amp rack for the front and just redoing everything in the rear of the cab.

When running the rcas, during testing with the system running, I was moving the rcas around in the fronk while he was listening to the noise in the tweeters. Some areas were better than other by far but never did the sound completely go away.

 

What i did and it seemed to work on my pioneer premier 690 was...
I took a small section of wire, soldered both ends. Tucked one end under the rubber shielding at the end of the connector and took the other end and attached it to the mounting bracket. Made my noise issue go away. If its a pioneer headunit, the pico fuse might be blown if grounding the rca's dont work.

 

This is what I have found, again as a last option to try and fix this problem

http://bcae1.com/images/rca/temporar...eldrepair.html

But on his HU, the rcas come out on 6" extensions

 

So, whats your point. Use an 10in piece of wire. if you hold the RCA in your hand, the rubber part between your hand and the metal should have a little give to it. Thats where i tucked the wire and let the rubber shield hold it in place.

 

Point is, never had to ground an rca before and this is a new, not so cheap HU. Battery is always disconnected to change any wiring around, very clean install so I would hope theres no issues with internal fuses. Just want to make sure I cover all the basis with someone familiar with this kind of issue. Considering all the complicated issues with this MR2 so far, last thing I want to do is fry the HU. Just making sure I got it right. You mentioned you slipped yours under the insulator, this was the closest pictorial diagram I could find to relate to it. Its a bit different, but the same concept I guess. We'll give it a shot today and cross our fingers.

 

Basically the concept behind the grounding the rca is so the headunit is not trying to find a ground through the rca's to the amps. So by giving it another path of least resistance, directly to the mounting cage, it would take that path. Its a known problem with pioneer headunits.