Isolator Recommendation for 2018 GMC Sierra 3500 with Second Battery
Published 12/04/2018
Question:
2018 GMC Sierra 3500, what isolator would I need to use with a second battery, 4 post or 3 post isolator?
asked by: Adam B
0
Expert Reply:
You'll might want to check the RPO codes for the alternator size you have in your 2018 GMC Sierra 3500 to determine the amperage rating for the alternator so that you pick a properly rated isolator.
K68-105 amp
KG8-130 amp
KG3-145 amp
KW1-160 amp
Most likely you have the highest rated alternator so you'd want to go with the Redarc Smart Start Isolator part # 331-SBI212D which is a dual-sensing 12 volt isolator rated for up to 200 amps.
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Redarc Smart Start Battery Isolator - Dual Sensing - 12 Volt - 200 Amp
- Battery Charger
- Battery Isolators
- 12V
- Maintains Only
- Vehicle Battery to Auxiliary Battery
- Redarc
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