Drawing power from battery at idle
#21
07-10-2021, 05:56 PM
You DO NOT connect any accessory directly on the alternator battery lead of a ECU/ECM alternator output controlled charging system.
Even the starter factory is first supplied directly from the battery and a piggyback lead to the alternator.
Your ECU in the MAZDA can not effectively adjust the charging rate of your alternator..... so I am not sure if you would damage your Alternator ,ECU or battery maybe all 3? There are some thing electrical you just don't cheat on!
Even the starter factory is first supplied directly from the battery and a piggyback lead to the alternator.
Your ECU in the MAZDA can not effectively adjust the charging rate of your alternator..... so I am not sure if you would damage your Alternator ,ECU or battery maybe all 3? There are some thing electrical you just don't cheat on!
#22
07-10-2021, 06:19 PM
When you add none factory electronics you either piggy back an existing circuit after you verify it will support the additional load (must test for both heat using a digital temperature gauge and also the ohms with all the devices at maximum demand) or you connect directly to the batter(always a better choice).
Last edited by Callisto; 07-10-2021 at 06:21 PM.
#23
07-13-2021, 03:27 PM
Thanks. The battery it is, then. I expect the DC to DC unit (10 amp, 12 to 48 volts) tomorrow. I'll check back with results, only if I don't fry something.
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