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Join Date: Dec 2005
Location: Bedford, TX
Posts: 430
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Bosch CDI in '68 911- Alternator light problem?

I just finished installing a Bosch CDI, coil and tachometer transmitter tonight. It started up on the first try and pulls much stronger with a smoother idle.

However, I noticed that the alternator light has changed from a very faint glow before to a more pronounced glow with the headlights on. When using the turn signals it pulsates a little brighter with each click. This is not noticeable with the headlights off, probably because of the sunlight I'm guessing.

When I had first installed the H4 headlight assemblies, the glowing was similar to tonight, but it was greatly reduced after installing headlight relays (plus the instrument lights were much brighter).

I hooked the wiring up as follows:

CDI- pin A to coil 15 terminal, pin B to keyed power, pin C to black Pertronix wire and pin D to ground on the side panel.

Tachometer transmitter- pin A to ground on the side panel, pin B to coil 15 terminal and pin C to tachometer wire.

The red Pertronix wire is attached to keyed power along with the fuel pump.

I've got the single red keyed power feed wire in the engine compartment running the Pertronix, CDI and fuel pump with a four-way connector. Do you think this is pulling too many amps now and causing the alternator light to glow brighter?

Thanks in advance,

Mike

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Mike

'68 911 # 11830241
Old 06-01-2006, 07:16 PM
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