[bmdblyou]

Hey guys, new member, just picked up an 08 e90 335. I hardwired my v1 into the car, correct conections and ground. Mounted it to the windshield and it makes an interference noise. Im assuming it has something to do with the keyless remote or something. It worked for a bit before thats how I know it was hooked up correctly. Anyone have this happen before? Suggestions?

Thanks
Kyle

[upstatedoc]

What do you mean interference noise? What is it alerting to? Do you have adaptive cruise or parking sensors?

[anerbe]

did you try the cigarette lighter power to see if you still get interference? if so, try a different car?

you need to troubleshoot.

how did you hardwire? tap a head liner wire? or run a new wire with fuse block to glove compartment fuse box (proper way)?

[bmdblyou]

Originally Posted by upstatedoc

What do you mean interference noise? What is it alerting to? Do you have adaptive cruise or parking sensors?

I do not have either of these features.

The radar will flicker on for a second, screen will be on then shut off, and noise will continue. I connected it to a switch 12v wire/soldered and grounded it to the car.

^and unfortunately my cigerrette lighter adapter hasn't worked since ive gotten it.

[upstatedoc]

ah so it's not the RD that's making the noise. Sounds like a bad hardwire. There is a sticky here somewhere on the proper hardwire for an RD.

This thread may be helpful:

http://www.e90post.com/forums/showth...ector+hardwire

[bmdblyou]

i used a voltmeter to find a key switch 12v that ran below the drivers side underpanel by the pedals. Spliced and soldered to a key switch 12v wire. First turned it on and off multiple times to check connections and what not. Worked great. Used it for an hour, went out to my car and upon unlocking and opening the door you could hear the weird interference noise coming from the v1. I'm good with wiring so i know I got a good connection and ground. Any other suggestions? Because that thread did a completely different thing than what I have done.

[upstatedoc]

Originally Posted by bmdblyou

Any other suggestions? Because that thread did a completely different thing than what I have done.

But its the right way.

[anerbe]

get it done right. tapping a random wire isn't the safest way to install.

test the V1 in another car with a working cigarette lighter. confirm it's working properly.

don't mess around with your car's wiring, as you still need to figure out why your cigarette lighter isn't working. run a new wire/fuse tap into your glove compartment fuse box.

i don't think you're going to get any more troubleshooting advice from here considering:
1. you haven't confirmed if the V1 itself works with regular cigarette lighter power, and
2. you tapped into a random wire you found below the pedals.

[bmdblyou]

the v1 works, my adapter to the cigarette lighter doesn't. the wire i "tapped" was in fact a green-white key switch, same as in the tutorial. like i stated before it actually worked the first few times i turned it on and off. had it in there for about an hour and then heard the interference when i unlocked the car and opened the door. I'm assuming its something with the keyless entry and remote. Basically just a thread to see if anyone else has had the same problem. All else fails ill do it the way they showed in the video.

[JerryK73]

You may want to check and see if the wire you tapped into is triggered by the power door locks.

[bmdblyou]

^That makes sense. I'll go over it the next time I get a chance. Sounds like that might have been what happened. Thanks for the help and everyone else that chimed in

[anerbe]

Originally Posted by bmdblyou

the v1 works, my adapter to the cigarette lighter doesn't. the wire i "tapped" was in fact a green-white key switch, same as in the tutorial. like i stated before it actually worked the first few times i turned it on and off. had it in there for about an hour and then heard the interference when i unlocked the car and opened the door. I'm assuming its something with the keyless entry and remote. Basically just a thread to see if anyone else has had the same problem. All else fails ill do it the way they showed in the video.

All of the "tap-in" wires I've seen have been from the headliner / homelink wire. I did that for my E46M and it worked fine. Some people I've seen tapped into the sunroof wires and had problems with interference while using the sunroof.

I did the fuse tap into the glovebox for the E90, and it's perfect.

Just curious, why continue to troubleshoot your existing issue? Obviously there's an issue with wiring where it's tapped in wrong either due to a bad connection or interference with another wire/module. I would just uninstall and take the 45 mins to do it properly with no issues.

[bmdblyou]

^I obviously would like to avoid completely redoing it if I could. But i appreciate the input.

[upstatedoc]

[ano0oj]

hardwired mine through the glovebox, works perfectly fine but the radar turns on whenever I just unlock my car

[WilliamS]

If you found a wire that has power on switch, it might be for something small like the LED in the dome light that is used for ambiance, or some other low current source that cant fully power the V1. Worst case you tapped something that is a fake 12v through PMW. You need to tap the fuse box and do it the proper way. Your donig a great deal of damage to the unit if its suffering under powered.

[bmdblyou]

alright guys, went into my shop today and completely redid my v1 hardwire setup. Big thanks to whoever posted the link to the install that routes inside the homelink/sunroof area. Once I figured out how to take out the panel it was super easy from there. Works flawless.

One suggestion if anyone goes about it that way is to take out the small light surrounds that are closest to the windshield. You can see the clips much easier to get your screwdriver in there for better access.

Thanks for all the responses guys!

Kyle