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#1 |
Registered User
Join Date: Aug 2013
Location: Kissimmee Fl.
Posts: 39
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Factory tach to HEI with external coil info needed
The engine in my 67 is a 350 TBI out of 1990 1500 truck. The HEI distributor has a "external coil". Anyone know what wire to tap into for tach signal? Any info would help.
Thanks. |
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#2 |
Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,280
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Re: Factory tach to HEI with external coil info needed
It will need to go to the NEG side of the coil
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#3 |
Registered User
Join Date: Mar 2009
Location: WARRENSBURG,MISSOURI,64093
Posts: 1,518
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white wire if I recall correctly, the pink is hot.....
Ben ![]() |
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#4 |
Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,280
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Re: Factory tach to HEI with external coil info needed
Snipe is correct it is white and there should be a spade type hook up just off of the coil that your wire will/could plug into. The plug has a funky looking cover on it but that is where you want to be. They made that i suppose for the one for tach to not have to splice into the wiring.
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#5 |
Registered User
Join Date: Aug 2013
Location: Kissimmee Fl.
Posts: 39
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Re: Factory tach to HEI with external coil info needed
Found white plug. Hook up brown wire to white and pink to ign power. Right?
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#6 |
Registered User
Join Date: Mar 2009
Location: WARRENSBURG,MISSOURI,64093
Posts: 1,518
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Yep!
That's it..... Ben |
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#7 |
Registered User
Join Date: Aug 2013
Location: Kissimmee Fl.
Posts: 39
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Re: Factory tach to HEI with external coil info needed
Hooked ground to tach and hooked up wires like last post. SUCCESS.!!!
Thanks guys for the help! |
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#8 |
Registered User
Join Date: Mar 2009
Location: WARRENSBURG,MISSOURI,64093
Posts: 1,518
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That's what this board is all about! Sometimes it's instant answers, sometimes it takes a while, but lots of folks willing to help!
Have a great day! Ben Smith ![]() |
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