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?? Hardwiring my NAV system???

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Old Jul 24, 2008 | 08:46 AM
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Default ?? Hardwiring my NAV system???

I want to hardwire my NAV (TomTom One) into my car. I dont want to cut the end of the cord off and be surprised at some special wiring inside. Is there only a power and ground wire inside or is there some other wiring that will require special consideration? I imagine it is the same as a radar detector or any other cord that plugs into the car lighter.

Cajun
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Old Jul 24, 2008 | 09:21 AM
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Originally Posted by ccajun4real
I want to hardwire my NAV (TomTom One) into my car. I dont want to cut the end of the cord off and be surprised at some special wiring inside. Is there only a power and ground wire inside or is there some other wiring that will require special consideration? I imagine it is the same as a radar detector or any other cord that plugs into the car lighter.

Cajun
Hard wiring is a nice touch, but don't cut the car lighter plug from the power wire unless you plan to place an inline fuse in the power line. There is a fuse in the plug!

BTW, there are only 2 wires in the car lighter plug, power and ground.

HTH
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Old Jul 24, 2008 | 09:22 AM
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Originally Posted by coast7
Hard wiring is a nice touch, but don't cut the car lighter plug from the power wire unless you plan to place an inline fuse in the power line. There is a fuse in the plug!

BTW, there are only 2 wires in the car lighter plug, power and ground.

HTH
So I just need to put a fuse inline and hook the power and ground up? That is it? Nice, thanks

Cajun
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Old Jul 24, 2008 | 09:49 AM
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That's how my Sirius is wired!
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Old Jul 24, 2008 | 10:45 AM
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Why not use the power wires GM put in the car for this purpose ???

Look next to the BCM (in passenger footwell) and you'll see three wires taped together .... a black, an orange, and a yellow. The yellow is powered off fuse 11 (20 Amp) and is HOT when the key is in ACC or ON. The orange is powered off fuse 7 (20 Amp) and is HOT always. The black is a ground wire.

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Old Jul 24, 2008 | 10:52 AM
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Originally Posted by BlackZ06
Why not use the power wires GM put in the car for this purpose ???

Look next to the BCM (in passenger footwell) and you'll see three wires taped together .... a black, an orange, and a yellow. The yellow is powered off fuse 11 (20 Amp) and is HOT when the key is in ACC or ON. The orange is powered off fuse 7 (20 Amp) and is HOT always. The black is a ground wire.

I'm not touch'in this one.....
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Old Jul 24, 2008 | 12:55 PM
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Originally Posted by lucky131969
I'm not touch'in this one.....


Thank goodness I'm bald ... that last exchange almost set my hair on fire .... and I've definately lost my eyebrows from it .......



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Old Jul 24, 2008 | 01:58 PM
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Hi CC.

The owner's manual to my NAV (Mia, Mio, or something like that) cautions to unplug thr unit upon starting the vehicle. Its probably undue caution, but I thought I'd pass it on to you anyway.

Regards, GRT

Last edited by c5-pewter; Jul 24, 2008 at 02:00 PM. Reason: clarification
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Old Jul 24, 2008 | 02:49 PM
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Originally Posted by c5-pewter
Hi CC.

The owner's manual to my NAV (Mia, Mio, or something like that) cautions to unplug thr unit upon starting the vehicle. Its probably undue caution, but I thought I'd pass it on to you anyway.

Regards, GRT
I am hardwiring it in my Jaguar, not the vette.

I will have to check out the deal with not having it plugged in while starting. Thanks for the heads up bro.

Cajun
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Old Jul 24, 2008 | 03:05 PM
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Originally Posted by BlackZ06
Why not use the power wires GM put in the car for this purpose ???

Look next to the BCM (in passenger footwell) and you'll see three wires taped together .... a black, an orange, and a yellow. The yellow is powered off fuse 11 (20 Amp) and is HOT when the key is in ACC or ON. The orange is powered off fuse 7 (20 Amp) and is HOT always. The black is a ground wire.

You have to connect the cut power wire to something, right? So if you use the orange wire mentioned above, you do not need to install an in-line fuse if you cut off the lighter plug.

To find those 3 wires, remove the carpeted panel in the passenger footwell covering the fuse box/BCM. On my C5 the 3 wires were taped together with black tape near the top left hand (driver's) side of the BCM. Simply splice your two cut wires to the yellow (12v switched) and black (ground) wires.

HTH

Last edited by coast7; Jul 24, 2008 at 03:07 PM.
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Old Jul 24, 2008 | 03:12 PM
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Originally Posted by coast7
You have to connect the cut power wire to something, right? So if you use the orange wire mentioned above, you do not need to install an in-line fuse if you cut off the lighter plug.

To find those 3 wires, remove the carpeted panel in the passenger footwell covering the fuse box/BCM. On my C5 the 3 wires were taped together with black tape near the top left hand (driver's) side of the BCM. Simply splice your two cut wires to the yellow (12v switched) and black (ground) wires.

HTH
I am hardwiring this in my Jaguar not the vette. Thanks for the help.

Cajun
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Old Jul 24, 2008 | 04:59 PM
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Originally Posted by ccajun4real
I am hardwiring this in my Jaguar not the vette. Thanks for the help.

Cajun

Man, there's a dangerous thought .... older Jags had Lucas wiring ... which led to jokes such as ....

* Back in the 70's, Lucas decided to diversify its product line and began manufacturing vacuum cleaners. It was the only product they offered which did not suck.

* Alexander Graham Bell invented the Telephone.Thomas Edison invented the Light Bulb. Joseph Lucas invented the Short Circuit.

* Not many people know that Lucas attempted to develop a computer. Why did they stop? They could not find a way to get it to leak oil.

* The three position Lucas switch - Dim, Flicker and Dead.

Want me to keep going ????? I'd stay with plugging it into the cigarette lighter .... Jag electrical systems are still pretty flakey ....


Last edited by BlackZ06; Jul 24, 2008 at 05:03 PM.
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Old Jul 24, 2008 | 05:02 PM
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Originally Posted by BlackZ06
Man, there's a dangerous thought .... older Jags had Lucas wiring ... which led to jokes such as ....

* Back in the 70's, Lucas decided to diversify its product line and began manufacturing vacuum cleaners. It was the only product they offered which did not suck.

* Alexander Graham Bell invented the Telephone.Thomas Edison invented the Light Bulb. Joseph Lucas invented the Short Circuit.

* Not many people know that Lucas attempted to develop a computer. Why did they stop? They could not find a way to get it to leak oil.

* The three position Lucas switch - Dim, Flicker and Off

Want me to keep going ????? I'd stay with plugging it into the cigarette lighter .... Jag electrical systems are still pretty flakey ....


Dont hate bro It is a newer Jag and I love it. Back to the subject, anyone got any constructive info?
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Old Jul 24, 2008 | 05:14 PM
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take the unit and the power cord to radio shack they will have the plugs that go into the back of the tomtom with that some wire and a fuse holder you will not need to botch your car adapter and could use it in another car if you wanted.
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Old Jul 24, 2008 | 05:16 PM
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Originally Posted by M_T_0
take the unit and the power cord to radio shack they will have the plugs that go into the back of the tomtom with that some wire and a fuse holder you will not need to botch your car adapter and could use it in another car if you wanted.
Now that is what I am talking about Thanks bro

Cajun
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Old Jul 24, 2008 | 05:33 PM
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Originally Posted by ccajun4real
Dont hate bro It is a newer Jag and I love it. Back to the subject, anyone got any constructive info?
Do a Google search on Jaguar and "multiplex" ..... the wiring system uses some wires to not only provide power to a part, but also carries computer "commands" to the part ..... if you tap into one of those lines you will possibly create problems for the device .... your added draw can "scramble" the command signals.

If I were you I'd check on some Jag forums as to where people have tapped into the car for power.

It would have helped early on if you'd been upfront that this was for a Jag ... and year and model (XJ8, S-Type ... whatever ....) wouldn't have hurt either.

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Old Jul 24, 2008 | 05:38 PM
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Originally Posted by BlackZ06
Do a Google search on Jaguar and "multiplex" ..... the wiring system uses some wires to not only provide power to a part, but also carries computer "commands" to the part ..... if you tap into one of those lines you will possibly create problems for the device .... your added draw can "scramble" the command signals.

If I were you I'd check on some Jag forums as to where people have tapped into the car for power.

It would have helped early on if you'd been upfront that this was for a Jag ... and year and model (XJ8, S-Type ... whatever ....) wouldn't have hurt either.

I posted on the Jag forum jimmy. I dont need to post what type of car. My questions were only about the wiring inside the sheath of the cord.......if you read the post. Thanks for your input on the negative points of my car.

Cajun
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Old Jul 24, 2008 | 05:51 PM
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Originally Posted by ccajun4real
I posted on the Jag forum jimmy. I dont need to post what type of car. My questions were only about the wiring inside the sheath of the cord.......if you read the post. Thanks for your input on the negative points of my car.

Cajun
I think you're being overly sensitive here ... I have a 1999 Jaguar Vanden Plas (basically a stretched version of the XJ8) sitting in the driveway right now .... and my folks have had Jags back to the early 1970's when the original XJ6 came out. I've also owned an Austin Healey Sprite, an MGB, and a Jensen Healey.

I've seen the upside of British cars (especially the Jag) such as can't beat gourgeous leather and wood interiors and styling that makes the German cars look like ... well .. German cars .....

I've also seen the downside of British cars ... especially the older ones ... I used to be a VERY good customer at this company .....

http://www.mossmotors.com/

The point I was trying to make after you said it was a Jag is you need to be careful which wires you tap into .... the newer Jags have a "multiplex" wiring system and it WILL cause you problems if you tap into the wrong circuit.


Last edited by BlackZ06; Jul 24, 2008 at 05:55 PM.
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Old Jul 24, 2008 | 06:26 PM
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You are right, I really did think you were bashing my car. Sorry about that, guess it is hard to read a persons intent through type. Thanks for the input bro. I will probably just run wires from the battery and maybe use a bare metal ground. Thanks

Cajun
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Old Jul 24, 2008 | 08:58 PM
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Here's how I hardwired my Garmin Nuvi 660.

Took the plug apart.


The traffic module board is integrated in but the power connection is easy enough to tap into.


Ready to install including an inline fuse. Ran the cable into the center dash and hooked to an always hot circuit so it charges with the ignition off.


Mounted the Nuvi with a Kuda mount. Works great.
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