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BCU Lock?!

Old Jan 15, 2019 | 07:58 PM
  #1  
SundayFunday's Avatar
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Winching
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From: Central MA
Default BCU Lock?/ anti theft? Hazards flashing and no spark

Help.

04 Disco - I have a feeling I may have just caused a BCU LOCK / anti theft lockup & if anyone with some experience or expertise may point me in the right direction would be reading this, Please, any insight wold be appreciated.

Im on the final stages of wiring a few aux switches.
I have just mounted and ran new 14g wiring to a BLUSeas aux fuse box under hood.
I have 5 Aux switches in cabin
I meticulously labeled everything and consulted with electrician to make sure Ive been running fuse, and relays correctly
I connect last wire this eve, and connect battery to test

- I slide on battery terminals, and do not tighten as they are snug - and simply looking to test switches
- walk around to cabin, and hazards are blinking.
-- I immediately attribute this to tapping into my (what i believed to be hazard power supply?) dimming power - for switch illumination.

NOW to fully disclose:
3 switches are new carling switches. brought in own power supply to switchs
2 switches are non latching cruise control pillar switches salvaged from other d2 - in which I replaced the fog light cover for an authentic "factory" auxiliary ( roof rack light)
I cut pigtails, and wired 2 switches to relays for 2 separate LED roof rack aux lights.

*I had been using the one switch on dash for quite some time - worked excellent! -
and as I had dash opened up to add new carling switches, and add aux fuse box - i added one more too rack light switch.

I pulled both pillar switch power AND dimmer light power for pillar roof rack lights AND dimmer light power only for new 3 carlings switches ( old cruise control switches - 17A each rated, using 14g wire to relay - pulling relay power to roof from blue sea box) all from that one red wire under steering wheel i identified as headlight power - using for dimmer power for switches.

I immediately realize what a silly move to pull all this from that one red wire line beneath steering wheel.
( because i figured the switch working great was only powering switch to relay and LED - adding an additional wouldn't hurt - and wasn't thinking when i thought id also be ok to pull three more dimmer switch bulbs on the same as well)



SO when i connect battery: hazards.
okay - figured obvious mistake - ill straighten this out right away.
between time of walking around truck to disconnect - DIFF LOCK gear illumination and audible alarm.
now I can't turn key back and out of ignition.

So I believe with my tap on wire - I drew too much? - and have perhaps told BCU to go into anti theft mode ?!?!
I can turn key to "start" but getting no spark -

I do connected battery for 20 min - and disconnected dimmer power tap
DIFF LOCK went away - but hazards are blinking

I have a valet key, and have tried unlocking and locking 3x.

If anyone knows what I can do here, or what Ive done...
im patiently reading everything i can.
 

Last edited by SundayFunday; Jan 16, 2019 at 09:41 AM. Reason: Accuracy in title
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Old Jan 16, 2019 | 06:43 PM
  #2  
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Baja
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From: Lynchburg VA
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Try unlocking and locking 3x with key fob.
 
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Old Jan 16, 2019 | 09:10 PM
  #3  
SundayFunday's Avatar
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Winching
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Solved.
Inertia switch & ground
 
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Old Jan 16, 2019 | 09:28 PM
  #4  
Saturnine's Avatar
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From: Denver
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