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Timing light hook up

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Old Aug 29, 2001 | 01:01 PM
  #1  
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Default Timing light hook up

Where is a safe place under the hood to hook up the positive cable for the timing light? My lead will not reach the battery.
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Old Aug 29, 2001 | 01:07 PM
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Default Re: Timing light hook up (R. Bruno)

I hook mine to the battery side of the ballest resistor going to the coil.


Mark B.
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Old Aug 29, 2001 | 01:07 PM
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Default Re: Timing light hook up (R. Bruno)

R. Bruno,

I usually hook it up to the alternator BAT terminal. On my car there are also two terminals on the firewall, on the driver's side, which can also be used.

-Pedro
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Old Aug 29, 2001 | 01:09 PM
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Default Timing light hook up

R. Bruno,

Probably the best place is the positive lead at the back of your alternator... Safely away from your fan and exhaust manifold.

Regards,
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Old Aug 29, 2001 | 02:33 PM
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Default Re: Timing light hook up (Pedro'74)

R. Bruno,

I usually hook it up to the alternator BAT terminal. On my car there are also two terminals on the firewall, on the driver's side, which can also be used.

-Pedro
I use the positive terminal on the drivers side front wheel well. I ground to the brake lines off the master cylinder.
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Old Aug 29, 2001 | 02:38 PM
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Default Re: Timing light hook up (R. Bruno)

I've seen one forum member who made a pigtail off alternator battery terminal to use for this specific purpose, then put a cover on the exposed terminal end when not being used, pretty sweet setup. I simply use the hood light wire, since I installed a wire which can be disconnected during long periods of hood up, and I just put the female end on my timing light lead, works great.
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Old Aug 29, 2001 | 02:45 PM
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Default Re: Timing light hook up (john's '81 mouse)

Thanks guys. I will look tonight for the terminals on the drivers wheel well and see if I have them.
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Old Aug 29, 2001 | 03:09 PM
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Default Re: Timing light hook up (R. Bruno)

I always hook mine up to the bat terminal on the alternator.
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Old Aug 29, 2001 | 05:25 PM
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Default Re: Timing light hook up (SharkByte)

I was using a jumper cable to reach the battery! Now I use the alt. MJ
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Old Aug 29, 2001 | 05:59 PM
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Default Re: Timing light hook up (R. Bruno)

I use my external "jump start" battery
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Old Aug 29, 2001 | 06:15 PM
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Default Re: Timing light hook up (MNJack)

Aren't you guys afraid of shorting Alt positive with ground and burning out alt? Maybe I am becoming too protective?
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Old Aug 29, 2001 | 07:16 PM
  #12  
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Default Re: Timing light hook up (R. Bruno)

Wanderer- this is what I was afraid of too after the stories of burnt fusible links and other elec. problems I have read about here. What do the connections you use look like? Do they appear to be stock or are they add-ons?
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Old Aug 29, 2001 | 09:28 PM
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Default Re: Timing light hook up (R. Bruno)

What do the connections you use look like? Do they appear to be stock or are they add-ons?
I think Wanderer is talking about the horn relay (on early C3s) that is mounted on the driver side engine compartment wheelwell just below the edge of the fender. Not sure if later C3s have the relay there. It has a positive terminal that is perfect for connecting the timing light clip. I use this for positive and the alternator ground for negative.

Mark


[Modified by mdsmith, 8:30 PM 8/29/2001]
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Old Aug 29, 2001 | 09:59 PM
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Default Re: Timing light hook up (R. Bruno)

On our '73, I found a junction on some sort of relay or circuit breaker under the lip of the hood opening on the driver side, just ahead of the filler cap for the windshield washer reservoir. I think it is wired directly to the alternator hot lead. It just has the advantage of a little less metal around that can cause a short. I clip the hot lead there, and the ground lead to the alternator bracket, and everything is on the side where I need to stand to check the timing.
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Old Aug 29, 2001 | 10:04 PM
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Default Re: Timing light hook up (blu73)

I've got a Bubba Fxxd regulator. Shhhhhhhh. :bb for now.
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