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Boot wiring for the lock, what wire does what?

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boot lock
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9.8K views 12 replies 4 participants last post by  nicam49  
#1 ·
As far as I can tell, there are 4 ways to access the boot
Key, for preface lift cars, via the lock hole
Boot button in the boot lid
Boot button in the dash, deleted operon in later cars
Remote

I've sussed out the power feed to the release, it's got two that I can find, and they are retrim through the same earth, but where's the third?

And which wires do what?

Any help would go a long way into resolving the continued issues that so many people have

Thanks
 
#2 ·
If you look at Haynes, it's reasonably simple*

The remote or any push button causes the GEM to operate the motor via the orange/black wire.

The motor also operates a change-over type switch,

  • NC (red/black) is earthed when the latch is closed - tells the GEM the status
  • NO (black/orange) is earthed when the latch is open, operates the boot light
  • The motor and switch common are earthed by the black wire.

*there is a typo in the pre-facelift version, it says "see diagram ?? light switch",

Haynes say:

"The black/orange cable is the switched earth for the boot light (if fitted) and the tailgate motor provides the switching for this purpose. Please refer to diagram 4 on page 12.32, item 65, terminal 1 for further details"
 
#3 ·
but there are 2 power wires to the mechanism, yet only one earth

let me go and take some pictures and maybe that will help explain what i mean, but i've also got the haynes manual so i might look at that too :)

thanks
 
#4 ·
Orange/Black - Positive - Motor Power

Black - Earth.

Black/Red - Switch

Black/Orange - Switch for interior lights.
 
#5 ·
Orange/Black - Positive - Motor Power

Black - Earth.

Black/Red - Switch

Black/Orange - Switch for interior lights.
i used the black red to power the switch and it blew the switch :/
 
#6 · (Edited by Moderator)
It would the switch connects to the earth not live.

When you operate the switch it earths/grounds that wire, it should not have power

its just a signal wire.

The switch sends a signal to the GEM, it does not activate the lock itself. Ground that wire

and the lock should activate.

The only power going to the lock is the Orange/Black wire which is the positive feed

for the motor.
 
#7 ·
there are 2 wires that have power that go to the switch

unless you mean that one wire is the power and the other wire from the switch that looks like the power is actually the power FROM the switch to the gem and then the gem sends that power signal BACK through the other wire?
 
#8 ·
Is the other one the black/orange to the interior lights?

That will have power running through it.
 
#9 ·
i've taken the brave decision and decided to quit while i'm behind lol!

at least until i've figured out what to do next

thanks for all the help :)
 
#10 ·
i've taken the brave decision to and decided to quit while i'm behind lol!

at least until i've figured out what to do next

thanks for all the help :)
I've just bought a new solenoid for mine, so while I've got the lock off, is there anything I can check for you?
 
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#11 ·
i've taken the brave decision to and decided to quit while i'm behind lol!

at least until i've figured out what to do next

thanks for all the help :)
I've just bought a new solenoid for mine, so while I've got the lock off, is there anything I can check for you?
 
#12 ·
if it's not too late, and as long as you don't break anything, can you take a picture of said solenoid please?

assuming it's the bit that does the popping inside the body of the lock yes?
 
#13 ·
Ah! It's back together now! But if it helps I've got the old one... it's not a solenoid after all there's a motor with gears inside that case. Else, wait till it stops raining and I'll take it out again and take a pic
 
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