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ISpeed2day's Avatar
 
Join Date: Dec 2001
Location: Dayton, OH
Posts: 342
what size battery?

1986 911 Carrera motor... in a 914

Too many driving lights ( 2 pr Cibie IODE) ... stock sized h4 headlights.... killer stereo.... No AC... No Heat

Old 05-29-2007, 12:30 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
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Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
Check the alternator output specs. It's more important than the battery (only for starting). An '86 alternator should be good enough for your hardware, but confirm anyway.

Volts x Amps = Watts

Imagine all these working at once:
4 Cibie lights =
2 H4s =
Stereo
Ign.
Wiper motor
Fan
Misc.

You don't want a situation where the charging system can't supply the needed current. Otherwise, it comes out of the battery (NG).

Sherwood

Old 05-29-2007, 12:37 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
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