Rallye cluster gauge issues - 67 Barracuda

In the fuse box, the accessory feed is the black insulated wire with the flag terminal on the left
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The empty slot was used for various optional accessories; tach, rear defroster, air conditioning.

It's not too difficult to get a new or used set of fuse clips and terminals.
You can buy new from Bill Rose - he uses steel ones made by AMP - or used from someone stripping a car. The easiest used ones to incorporate are a set of singles from the accessory slot or the instrument lighting slot (far right in fusebox photo).

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Trial fit.
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Jumpered from the accessory buss.
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if you're only running the tach, the heavy gage wire I used is overkill.
Figured in case some future owner adds A/c or something better to go with the 12 or 14 ga.

For the tach power, I used some blue insulated TXL from Wirebarn.com General purpose wire would be OK too.
Used a marker to put a black stripe on it to reduce confusion with the factory ignition wires.

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