Is pin 14 (Red B+) needed in the chassis wiring harness?

[PcarPhil]

I have a question - is pin 14 (red B+) of the 14 pin connector located in the engine bay actually needed for a very simple wiring configuration? This question is probably useful for most of the aircooled 911 years but in my instance it's relating to a '77 chassis.

I don't think it is. I've been working on wiring recently and I think pin 14 is only used to provide power from the alternator to the rear fuse panel and relays. If I'm not running a heater blower motor, rear defrost, etc. can I remove pin 14 from the 14 pin connector of the chassis harness?

Thanks for the help.

[MBEngineering]

HI Scott
you can remove the wire and you will then loose power in to the engine bay, no power to the engine components and the rear window.
I would leave the wire in, as it then supply's power into the engine bay which you can then use, timing light, MSD box, hand lamp, 12v Co% tester, test light.

regards mike

[PcarPhil]

Originally Posted by MBEngineering

HI Scott
you can remove the wire and you will then loose power in to the engine bay, no power to the engine components and the rear window.
I would leave the wire in, as it then supply's power into the engine bay which you can then use, timing light, MSD box, hand lamp, 12v Co% tester, test light.

regards mike

Mike,

Yeah I thought about the lack of 12v power in the engine bay if I remove that wire - especially for a timing light and test light. No MSD box needed - I'll be running a 3.2 with DME and the ignition power comes from the DME harness. I'm just not a big fan of leaving large 12v wires exposed that aren't used in normal driving.

I will be running a LM-1 wideband O2 meter. In my last car I used power from the battery for the meter and I may do the same for this car.

Thanks for the response.