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Old 11-26-2021, 06:20 PM
topfuel67 topfuel67 is offline
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Default 1966 Rally Tach wiring harness

I'm trying to get my wiring as correct as possible. On page 15-14 of the shop manual it shows this round object. Is this just a grommet where it goes into the firewall or is this some sort of resistor or a rotator splint of some sort?
So far I really only have part of the brown wire that hooks into the back of the Tach and then basic black wire spliced in. I see a repro kit that has the wiring from the coil to a clip, but don't know where that clip goes according to the wiring diagram here
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Old 11-26-2021, 06:28 PM
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Depends on which tach you have. Ones with passive circuits are for points ignitions but the Delcotronic tachs (have seen for 65s) have an extra power lead.

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Old 11-26-2021, 07:44 PM
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Quote:
Originally Posted by topfuel67 View Post
I'm trying to get my wiring as correct as possible. On page 15-14 of the shop manual it shows this round object. Is this just a grommet where it goes into the firewall or is this some sort of resistor or a rotator splint of some sort?
So far I really only have part of the brown wire that hooks into the back of the Tach and then basic black wire spliced in. I see a repro kit that has the wiring from the coil to a clip, but don't know where that clip goes according to the wiring diagram here
If you scroll further down page one and see a thread on 10-26-21 there’s talk on the round grommet that’s used for the under hood lamp Black wire or the tachometer Brown wire.

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Old 11-26-2021, 08:27 PM
topfuel67 topfuel67 is offline
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Mine is the standard ignition. Thanks for the replies.

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Old 11-27-2021, 05:27 PM
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Old 11-28-2021, 01:04 PM
topfuel67 topfuel67 is offline
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Thank you for the pics. I'll search Ames for that part number. Ames is the best price I have found for the Tach wiring harness too.

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Old 01-14-2022, 03:03 PM
topfuel67 topfuel67 is offline
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I ordered the grommet from Ames along with the correct wiring and installed it. Everything looks great. Just found the original grommet at the bottom of one of my bins that I put all the parts in when I tore it apart a few years back. Same thing happened with the windshield wiper transmission clip. Searched and searched, ordered the replacement then found my original. Just had to share.

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