Did you solder the wires to the same ground wire in the harness as the back power ground from the head-unit? Did you verify that the moved pin was correctly locked in the connector? (Pull on the wire, if it comes out, it was not pushed all the way in or the pin was damaged when you removed it from the mute position.

If you get a message saying that the PB wire is not connected properly, then that means that you have correctly grounded the parking brake wire. It means that the bypass wire (was the mute wire) is not correctly grounded or correctly inserted into the correct connector position. There aren't any other possibilities.

I pulled on the mute wire and it didn't come out when I put it in. I will double check to make sure that I didn't damage it when I moved it. If I did damage it, is there another wire that I can use in its place or somewhere where I can get one? I will check it out and hopefully it just didn't go in all the way or something simple. I did solder them both to the black wire coming out of the back of the deck. I worked at circuit city for a few years doing installs, but like I said before, when I worked there the N1 just came out and we didn't really sell any that I got to install.

Mine is an f700 so no vss wire.

The part that threw me was that there was no warning when I had the grounds wired separately... one to the harness and one to the chassis. I even took it for a drive like that because the the double din kit didn't fit properly and I went back to the shop to get parts. When I came back and soldered them both to the harness, then I got the error.

The VSS is supposed to only be used when there is no gps signal.

Mine is an f700 so no vss wire.

 

The part that threw me was that there was no warning when I had the grounds wired separately... one to the harness and one to the chassis. I even took it for a drive like that because the the double din kit didn't fit properly and I went back to the shop to get parts. When I came back and soldered them both to the harness, then I got the error.

That sounds more like a situation where you hadn't properly grounded the green parking brake wire, no grounded parking brake wire, no warning!

It still sounds like you have the parking brake wire grounded properly, but the bypass isn't done correctly. Without anyone else looking at it, that's what the descriptions keep pointing to.

I just went out and checked my mute wire. It wasn't latched all the way. It wasn't loose, but it wasn't in and wasn't making good contact with the wire. I made sure it was in all the way and now I'm good to go. Thanks everyone for the help. It was greatly appreciated!!!

Just finished this on my 2008 4Runner. Switched the yellow/ black, soldered everything together at the ground wire, and it works perfectly. I just bought the F900 with the 2.0 already installed as well, so it worked with a brand new one. Thanks all!!

I just installed the F90 in my 05 FX4 Supercab did the hardware bypass and this thing works like a champ. I would like to thank all the people that are smarter than I who took the time to figure this out. Your help is much appreciated!

Hey guys, newb here.

Just wired up my F90BT last night. I moved the Mute wire and grounded it along with the Parking Brake wire.

As of right now I don't have my VSS (Vehicle Speed Sensor) wire connected out of the assumption that it would defeat the bypass.

Can I connect this? Or shall I leave it as is?

Thank you!

Hey guys, newb here.

 

Just wired up my F90BT last night. I moved the Mute wire and grounded it along with the Parking Brake wire.

 

As of right now I don't have my VSS (Vehicle Speed Sensor) wire connected out of the assumption that it would defeat the bypass.

 

Can I connect this? Or shall I leave it as is?

Connect away, it does not break the bypass

not sure what happened. has anyone had this problem or know whats going on? basically pulled the unit out, switched the mute wire to its new spot, plugged it back up and all i get is the fan to spin (unit gets power) the fronts and rears to hum and the subs pop upon plugging/unplugging sub outputs, and the screen is dead. Help! thanks! John

I did this harware bypass but ow i noticed i cant mute the radio or change the voice. I also cant change the settings to change the mute or attenuator whent he navi voice is directing me while i listen to music. Is there a fix or did i do something wrong? Please HELP!

I did this harware bypass but ow i noticed i cant mute the radio or change the voice. I also cant change the settings to change the mute or attenuator whent he navi voice is directing me while i listen to music. Is there a fix or did i do something wrong? Please HELP!

The hardware bypass is not a factor in this. The mute button on my steering wheel always works, but pressing and holding the volume knob in only sometimes works.

To change the nav setting to mute the audio when giving directions, you must first go to the audio source screen and select off. With the audio off, you can now go to the nav settings and change the option to mute. (After this, you can turn the audio back on and the setting will stay on mute.)

i cant even select those 3 settings i spoke about. the buttons for those settings are grayed out. I cant select the voice i wanna use like samantha. I cant use the attenuator instead of the mute feature for the navi voice. so you are saying the hardware bypass has nothing to do with this?

thanks i am dumb. you were right they work fine.

I followed the bypass and checked the connections but I am now not getting the ability to input a destination or change nv settings the keys are greyed out. (even when parked) any advice?

Figured it out Forget it. great bypass....

Alright. I'm a little scared to post this as I am sure I'll get some criticism along the lines of 'if you don't know that, you should'nt mess with it..etc'. I'm trying to learn, and I think my downfall was not installing the unit myself losing valuable learning.

Anyways, I had 'pros' install my F90BT. It actually works as advertised other than I'm finding that BT kinda slows the system down a bit.

I have never been good with the flow of electrons but I would like to do the hardware bypass. I have read this thread and many others and would like to ask for help on the physical "How to" ground the parking brake wire and the relocated mute wire.

I have pulled my AVIC out with everything is still connected. I have located the mute wire and think I see the parking brake wire (light green wire coming out of Black clip which is in the bottom left corner of unit, to the left of white clip to which the mute wire is connected to).

Here are my questions, and please understand I am good at many things, but have never fiddled with electronics.

1. How the heck to you ground these wires? I've have guesses.

a. Do you just use those "jacket wire pinching things" and pinch the parking brake wire on one side and pinch the Black ground wire on the other side. Meaning I don't have to physically cut the green wire coming out of the AVIC, meaning that it is still connected at the other end to the parking brake. Would I use the same 'jackets' and pinch the relocated mute wire to the Black ground wire?

b. Do physically cut it, lets say 12 inches down from the unit and ground it to the chassis or a black ground wire. Would that be the same as pulling the green wire at the parking brake side grounding it to the chassis near the parking brake.

Also, will playing with the parking brake wire turn on the 'red light' in my car on the dash, or is that light part of another system altogether and the AVIC does not use it in its parking brake logic?

Lastly, is there any advantage to the hardware bypass over the software bypass. I only ask cuz if you have to ground the parking brake wire, whynot just move the mute wire while you are there.

Anyways, any clarification on the 'how to' ground the pb wire and mute wire would be appreciated.

Thanks

I have a new F900BT, the hardware bypass worked perfectly. I grounded both wires to the common radio ground (blk) with no issues. Thanks!

One question I have to ask: When a route is "live" on the GPS, the Audio on the XM and IPOD take hits or breaks up a bit. Feels like it's related to the GPS because when I delete the current route, it stops. I have both the Master and voice volume off or all the way down. Just wondering if there is a work around so that I can use the GPS and listen to music with out the GPS audio/speach. -I coulnd't find a related post.

I have a new F900BT, the hardware bypass worked perfectly. I grounded both wires to the common radio ground (blk) with no issues. Thanks!

 

One question I have to ask: When a route is "live" on the GPS, the Audio on the XM and IPOD take hits or breaks up a bit. Feels like it's related to the GPS because when I delete the current route, it stops. I have both the Master and voice volume off or all the way down. Just wondering if there is a work around so that I can use the GPS and listen to music with out the GPS audio/speach. -I coulnd't find a related post.

Was covered many times, or you you could simply read the manual... Go to AV Settings and change Mute Input/Guide setting to Attenuate or Normal...

whats the purpose in moving the mute wire? do you ground both the mute and parking break wires? and what are you grounding them to?

I did the hardware bypass as shown. It works perfectly. There is no need at all to do the software bypass at all. This is a great site; keep up the good work guys. It’s great to be able to make mods to this unit and make a good thing even better.

700BT

As a note I found a cable in one of my old computers laying around (actually a few different ones at that) where the pin is the same and was able to pull the wire/pin out of it to use versus moving the mute wire. Just another alternative to moving wires for those of you who want to retain the mute wire

hey guys i'm installing F90bt right now and dont know where to put my parking brake wire, what do i do with it ?

Hey all,

Yes noobie here. I was wondering if I already have the 2.0 software sd card can I somehow make the parking brake software update on that and somehow re-run the update with the updated speed. Of course some instructions would be nice as well.

Since I have seen any and all questions here I just thought I would ask, I havn't seen this one on here yet.

Question 2. I also updated the blue tooth update and can't get either phone to connect. Since my wife and I have the same type of phone not sure if its a Palm problem. We have the palm centro. any connect issues out there?

Thanks a bunch 900bt owner here in the 06 king ranch f-150.

Scuba Joe

hey guys i'm installing F90bt right now and dont know where to put my parking brake wire, what do i do with it ?

Ground it!! Either find the black ground wire from your vehical or just ground it to the frame somewhere!!

quick question.

The mute wire(yellow/black) has a wierd flat connector in the end. How would I be able to ground this flat piece of metal? Do they sell the connector for this piece with a round/ circle flat end(the round end like the ground wire has on the black harness)?

what about the parking brake(light green) wire? would i have to cut the little red box thingy off and splice the wires and ground it? or solder a round piece on to it?

thanks