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Old 05-04-2013, 01:16 PM   #1
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adding a tach to a 96, 460ci ford

I looking to add a tach to my E350, 460. Pulled the dog house off and found the coil (I think). The bracket just behind the coil has 2, 2 wire connectors on it. Any Idea which one is going to the primary of the coil?

Larry
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Old 05-04-2013, 01:50 PM   #2
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Never mind on the first picture, It's not for the coil. I did find a 8 wire connector coming out of the distributor. It has the following:

1 2 3 4
o o o o
o o o o
5 6 7 8

The top of connector has 4 wires.

1-red, 2-black / yellow tracer, 3-black, 4-green

bottom row:

5-empty, 6-black / yellow tracer, 7-black, 8-green

I cannot find a schematic on the internet, maybe some one knows wich wire would be used for the signal to the tach.

Help

Larry
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Old 05-04-2013, 02:11 PM   #3
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Does the engine have an external coil? If so you need to tap into the negative side of it.
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Old 05-04-2013, 02:42 PM   #4
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It's according to how your tachometer reads RPM. If it is just 'counting' ignition pulses, seems that any one of the 8 wires would work. You only need to worry about #1 when checking timing.
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Old 05-04-2013, 08:10 PM   #5
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Well, I did some playing around and found that the 2 green wires will operate a analog type tach. However, if I rev the engine over 800 rpm and back off the throttle the engine will die and I need to shut off the key and restart the engine.

Doing some further research, I think the dist output is not going to work. Some dist use a Hall effects set up for the output signal. This would then feed to the ECU and then ECU fire the coil.

I think I need to go to the coil input.

I'll keep you posted.

It's a bitch without a schematic. Could not find one on the internet.

Keep trying sooner or latter it's got to work or blow up

Larry
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Old 05-05-2013, 09:09 AM   #6
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Here is your ignition system schematic.
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File Type: pdf 1996 F53 Ignition.pdf (36.6 KB, 257 views)
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Old 05-05-2013, 09:13 AM   #7
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Sorry I missed it was an E series. Here it is.
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File Type: pdf 1996 E350 7.5L Ignition.pdf (38.3 KB, 374 views)
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Old 05-05-2013, 11:34 AM   #8
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WOOH HOOO

Thank you very much for the schematic. I looks like i will need to go to the coil for the connection.

Again, thank you

Larry
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Old 05-15-2013, 01:03 AM   #9
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How to install a tachometer.

Hi.
I installed one in my 1997 36' M. H. Myself.
If you purchase it new you should have a copy of the schematic that came with your tac.
Just follow the direction and you cant go wrong.
Just a thought.
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