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2003 Mazda 6s
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54 Posts
For replacing would you recommend buying new or building a harness? I have built a few for motorbikes and am fairly competent with crimp and solder.
 

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2003 Mazda 6s
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54 Posts
I did a check today and the car has a .94 amp draw when locked and armed with all latches closed. The harness is super brittle like you said. I will definitely be buying a harness after looking at the 2 inch 100 or so strand wire bundle from the fuse-box.
 

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Rally Racer
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3,508 Posts
For the Harness you will need to know
1. 4cyl or v6
2. MTX or ATX
3. Roof antenna or glass antenna

The Specifics between wiring should be hashed out at the dealer to get the correct part number.

ENGINE & TRANSMISSION WIRING HARNESSES (3000CC)('03,'04 MODEL) 01/01
NumberNameCodeQtyD codeDate FromDate ToNote
GK2C-67-070JHARNESS,ENGINE67-07016707006.05.2003(MANUAL TRANSMISSION>GLASS ANTENNA) 030506 -
GM6B-67-070AHARNESS,ENGINE67-07016707005.01.2004(AUTOMATIC TRANSMISSION>ROOF ANTENNA) 040105 -
GK2F-67-070JHARNESS,ENGINE67-07016707017.04.2003(AUTOMATIC TRANSMISSION>GLASS ANTENNA) 030417 -
GK2F-67-070HHARNESS,ENGINE67-07016707020030417AN (GK2F-67-070J) (AUTOMATIC TRANSMISSION>GLASS ANTENNA) - 030417
GM6A-67-070AHARNESS,ENGINE67-07016707005.01.2004(MANUAL TRANSMISSION>ROOF ANTENNA) 040105 -
GM6B-67-070HARNESS,ENGINE67-07016707020040105AN (GM6B-67-070A) (AUTOMATIC TRANSMISSION>ROOF ANTENNA) - 040105
GK2C-67-070HHARNESS,ENGINE67-07016707020030506AN (GK2C-67-070J) (MANUAL TRANSMISSION>GLASS ANTENNA) - 030506
GM6A-67-070HARNESS,ENGINE67-07016707020040105AN (GM6A-67-070A) (MANUAL TRANSMISSION>ROOF ANTENNA) - 040105
 

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2003 Mazda 6s
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54 Posts
This may truly be a dumb question but here goes. Is there any way to access jumper cables in the trunk when the battery is dead? I tried the manual key but it wouldn't turn the cylinder, the trunk cab button didn't work because it is electric, and finally the seats only fold down from in the trunk. I replaced the battery but this question is for the future issues.
 

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This may truly be a dumb question but here goes. Is there any way to access jumper cables in the trunk when the battery is dead? I tried the manual key but it wouldn't turn the cylinder, the trunk cab button didn't work because it is electric, and finally the seats only fold down from in the trunk. I replaced the battery but this question is for the future issues.
I saw a YouTube video where it shows how you can access the trunk with a dead battery. Unfortunately, it doesn't work for all models. I'll try to look for it.

It happened to me that I got a dying battery, but all doors are still opening and closing. The question is, what if I have a totally dead battery? I don't know how to open the trunk.

EDIT: I found the video. I think I'll have to check mine again and see if I can access it.


Please be patient with the video.
 

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1,299 Posts
Why not add a secondary power post in a reachable area for emergency?

Wire it up to a waterproof protective quick connect plug w/cover and place it toward the undercarriage or bumper grille openings where you can reach even with the hood latched. From there you can hook up a secondary 12v source to temporarily power the vehicle’s electrical so you can unlock the doors to open the hood.

I used this method on my vehicle for winterizing purposes to keep the battery . Recommended & very handy for those that have sub-zero temperatures often

I can easily plug in my smart charger/maintainer through the front grill after I parked it in the garage. No need up open the hood.




(╭☞ ಠ ͜つ ಠ )╭☞ r=1+sinθ
 

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2003 Mazda 6s
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54 Posts
Thanks for input. I'm keeping the new battery on a maintainer and shouldn't have an issue in the future but still want to fully understand my vehicle. The hood has a mechanical latch in the cab which is good. I will look at a second power source as that could be useful in many situations.

Thanks for the video, alas the 03 doesn't have the hidden latch.
 

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To access the trunk with a dead or no battery: Remove the bolster that is on either side of the rearseat. Pop up and slide back the rear bottom cushion so you can access the bolt. I believe it is a 14mm nut on the bottom and once it is removed you can slide your hand under the bolster and towards the top. At the top of the bolster is a small white lever that you push to release the top of the bolster(You won't be able to see it as the bottom only allows a small amount of clearance). Once the bolster is removed you can use your socket wrench you just used or any other object as an extension to reach inside the trunk and press(outward toward the trunk from your position in the backseat) to release the seat locking mechanism for either side.
 
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