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Timing light hookup
Dumb question, but with the battery in the "boot", what do I hook the positive and negative leads for my timing light to? I have a single wire alternator, would it be safe to attach the positive lead to the alternator wire, and the negative (black) wire to the frame? BDR #168, neg. ground system, 351W, no accesories to speak of.
Thanks in advance |
That's how I do it.
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That works but I like to put my positive feed on the solinoid post and then ground the black wire to my engine. I have been told that sometimes the coil will cause some intermitentant misses in your light.
Clois |
I use jumper cables from the "boot" up to the engine for the positive wire. I hook the negative to a good ground in the engine compartment.
I suppose you could hook it to the alternator wire. Mine is very hard to get to so that's why I use the jumper cable method. |
I use a battery (4 AA batteries if I remember right) powered timing light.
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I hook up the positive to the solenoid & the negative to a ground on the engine, works just fine.
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Thank you all, good stuff once again.
I have a battery-powered light but it doesn't have the bells and whistles my new timing light has. Cheers, |
i use a battery op light now but have a older sun induction light, it doesn't seem to like the msd too much i get erratic strobe. i was told thats common,
i really like the battery operated one, the lack of dangling wires is a plus, especially with headers. i used to use wire extensions to get to the battery, with rubber sleeves over the clamps so they wouldn't touch. Fred |
I have an extra battery that I keep charged enough that it powers my light.
Matt |
Grab the spark plug lead with either hand while standing in a puddle. Your eyes will blink 8 times a second (the brain only can take in info at that rate), which is ideal for any V-8 engine. You wasted good money on a timing light.
Try it with an old style magneto and we will call you Rudolph. Inductive pick-up around plug wire #1. Pos lead of light to battery cable on firewall (starter solenoid). Neg lead grounded somewhere that is a good ground. If no flashing, try another ground. On some inductive timing lights, they do not always work with spark plugs gapped up in the 0.045 range or higher. You may need to temporarily close the spark plug gap to 0.030 to get the light to work properly. Do not ask me how I know that. |
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