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Use of Timing Light

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19MGA60

Senior Member
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I want to use a timing light on my 77 B. How do you hook it to the battery with out lengthing the wire? Or is there someplace else I can hook it to?

Thanks, tom
 
I have connected a timing light up to a hot fuse block terminal on my 76B.
Pete H.
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<blockquote><font size="1" face="Verdana, Arial">quote:</font><hr>Originally posted by Pete Haburt:
I have connected a timing light up to a hot fuse block terminal on my 76B.
Pete H.
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<hr></blockquote>

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Same here.

There may be a better way, but I remove the fuse block cover and connect the + Positive (red) lead clip to one of the fuses and connect the – Negative (black) lead clip to ground using one of the bolts that secure the coil. I also attach my tachometer in the same way then attach the pick up to the #1 plug wire.

This usually gives you plenty lead length to maneuver and position your equipment when taking measurements and making adjustments.

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or if you want, you can use a separate battery!! It is just a power source, so sometimes I hook up a spare battery that i have kicking around!!
 
I use a 12VDC power supply - actually, the one I use was originally a small charger for motorcycle batteries. Tapping a fuse as has been suggeted works very well too.
 
Ya know, I've always tapped off the fuse box, but now I'm thinking about going down to radio shack and getting a battery holder that'll hold 12v worth of batteries and attaching a coupla leads to it.
 
<blockquote><font size="1" face="Verdana, Arial">quote:</font><hr>Originally posted by aerog:
I use a 12VDC power supply - actually, the one I use was originally a small charger for motorcycle batteries. Tapping a fuse as has been suggeted works very well too.<hr></blockquote>

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I really like this idea and had been considering doing this too. I think I have a couple of old power supplies hanging around my garage that I can adapt to this so all I’ll need to do is plug it in to a 120VAC wall outlet.

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Battery chargers are not always filtered. A question that comes to my mind is would the 120hz 12vDC ripple cause the timing light to not read acurately?
A power supply would normally be filtered properly and I would think a pure DC would be much better.
 
Very true, they're not. I've compared readings via raw DC and off the charger/PS and have noted no variations.

I should add that my light is digital.

[ 10-27-2003: Message edited by: aerog ]</p>
 
<blockquote><font size="1" face="Verdana, Arial">quote:</font><hr>Originally posted by aerog:
Very true, they're not. I've compared readings via raw DC and off the charger/PS and have noted no variations.

I should add that my light is digital.

[ 10-27-2003: Message edited by: aerog ]<hr></blockquote>

OK, thanks.
Bob
 
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