Quote:
The car has a 5 pin ECU and a two pin ballast. The alternator has dual field terminals on the back.
If that 5 pinner is an OE item with a functioning 5th pin then it will require a 4 terminal "dual" ballast. Ohm the 5th pin (red/green wire on archives pentastar diagram) & if it has continuity then yes it is one of those. If it has no continuity (infinity on the meter) then it is a dummy 5th pin & a 2 terminal "single" ballast will work fine
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