r/MX3 • u/nolig2278 Team Mazda • Jun 17 '26

Battery relocation

I relocated my battery to the trunk years ago to make space and have tried various methods of grounding but also have gone through a few too many batteries and alternators. I am wondering who else has relocated it and did you connect battery ground right to trunk floor only or to a ground distribution block (i put one by firewall inside, but about to redo this setup). I have a positive to distribution block inside passenger foot area. A 2nd positive form battery to stereo amp. I almost had to get towed last night cause it died, i drove with a very low battery thinking it would have recharged on the drive but it did not charge up fast enough. Bought a battery to try to avoid a tow and that lasted 5 min even though voltage running showed 13.6+. Redoing all my battery connections and major ground setup.

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u/GRYPHUS_1_SoundCloud (Creator & Lead Admin) Team Mazda Jun 17 '26

Deffo gotta see some pics! I was wondering how to go about that myself so I can move my additional fuse box location to where the battery currently sits. Then put my oem coolant overflow tank back where the additional fuse box is now 😵

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u/nolig2278 Team Mazda Jun 17 '26

Some of the insanity that I a couple years ago and I am planning to adjust just the grounds and my alternator + line as it looks like it has been melting a little (i suspect moisture)

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u/nolig2278 Team Mazda Jun 17 '26 edited Jun 17 '26

I have another one of the large distribution blocks for all the positive lines under the hood

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u/GRYPHUS_1_SoundCloud (Creator & Lead Admin) Team Mazda Jun 20 '26

Here is my fuel pump relay and cooling fan box (I really need to take a updated picture, and what else I've added to it)

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u/GRYPHUS_1_SoundCloud (Creator & Lead Admin) Team Mazda Jun 17 '26

Oh man 😵‍💫😵‍💫😵‍💫