Hi Darcy, you should have a ground cable that goes from the battery -ve to a
bolt on the rear lifting eye and then to a bolt on the body just across from
the rear of the engine. This is usually a braided cable with no insulation, at
least mine is.
> Mine is a heavily insulted
It may just be offended, try sending it flowers.
Stan, also in a blizzard in northern MA
-----Original Message-----
From: 6pack-bounces+stan.foster=hp.com@autox.team.net
[mailto:6pack-bounces+stan.foster=hp.com@autox.team.net] On Behalf Of Darcy
Hunter
Sent: Sunday, December 16, 2007 8:39 AM
To: 6pack@autox.team.net
Subject: [6pack] Proper Grounding of TR6
Got a question regarding the grounding of my TR6. I added an O2 sensor with
the proper readout device to my TR6 about a year ago. My hope is to use it
to set-up the SU needles. Gage seemed to work well except that any time I
turn on another electrical device like lights or fan blower, the readout
shifts. I knew I needed to get this sorted and did a little work to try and
assure myself I was getting a consistent 12 volts. Nothing obvious so it
went on the back burner until this past Friday. I was flying home from the
UK and sitting beside a gentleman who was a car buff having a 911 and a 914
w/ Wankle engine. When I described the problem, he immediately diagnosed as
having ground leakage. Seemed good to me then I started thinking about how
the body was strapped to ground. I had no good ideas and looking around the
various catalog schematics were no help. I have been through most of the
car over the years and have seen no ground straps except those associated
with the steering column facilitating horn operation.
My one "ah hah" was when I looked more closely at the ground cable going
from the battery directly to the engine block. Mine is a heavily insulted
black cable similar to the red positive. Is that cable supposed to be
strapped to the body on the way down to the block? If so, anyone know if a
'73 would have a braided cable or insulated with a small section stripped?
Thanks and hope those in New England are enjoying the snowy morning.
Darcy Hunter
'73 TR6
North Easton, MA
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