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Two battery wiring starter

Tiny
TONY MCGOWAN
  • MEMBER
  • 1994 MITSUBISHI PAJERO
  • 2.8L
  • 44,335 MILES
My car has two batteries on it. How do I wire the starter motor up?
Wednesday, July 5th, 2017 AT 4:26 PM

3 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,567 POSTS
The two batteries should be wired in parallel so you still only have twelve volts. The starter is a twelve volt unit so there is no special wiring involved. Basically you have the same wiring as a single battery, just two connections for each instead of one.

I cannot find a good schematic of it as it was not sold in the US as a diesel just a gas model.
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Wednesday, July 5th, 2017 AT 6:33 PM
Tiny
TONY MCGOWAN
  • MEMBER
  • 3 POSTS
Both of the twelve volt batteries are ground to the car body. Question is where do the two positive leads go for the starter motor? Thank you.
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Thursday, July 6th, 2017 AT 10:55 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,567 POSTS
They both connect to the twelve volt positive terminal on the starter solenoid. Then there should be another cable from that to the main fuse box feed.
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Thursday, July 6th, 2017 AT 6:00 PM

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