[Healeys] Timing light electrical

Richard McGavern rmcgaver at rochester.rr.com
Thu Jan 3 07:57:20 MST 2013


I power my timing light with my battery charger, no confusion on polarity or
chance to ground out.

-----Original Message-----
From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net]
On Behalf Of Bob Spidell
Sent: Wednesday, January 02, 2013 10:29 PM
To: john spaur
Cc: healeys at autox.team.net
Subject: Re: [Healeys] Timing light electrical

re: "I presume ground attaches to the frame"

Yup.  Connect to something unpainted, like one of the P-clips on the wiring
harness.   I always use the big terminal on 
the starter solenoid--the one that connects to the battery--for a power
source.  Don't let the clip contact the chassis anywhere.

Also, if your timing light has a metal case it's probably 'hot;' i.e. if it
touches the chassis you'll spark (unless you have a special, 'positive
ground timing light,' which I've never seen nor heard of).  Either be very
careful or wrap the case with electrical tape, or both.

Bob


On 1/2/2013 7:18 PM, john spaur wrote:
> I have an inductive timing light. The car is positive ground. I 
> presume ground attaches to the frame. What point in the engine compartment
would be good to connect the negative voltage lead too? Would terminal A1 be
good?
>
> It has been a long time since I used one.
>
> John Spaur
> Electrically challenged
>
>


--
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Bob Spidell           San Jose, CA            bspidell at comcast.net

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