acavdragoon
Well-Known Member
Where would be the best place to plug an aftermarket tach light connection into a 1966 Barracuda? To light up the tach dial when the lights are turned on.
I never noticed a light for the ash tray on mine.I used to hook them into the ash tray light wire.
I do have an orange T shaped plugin for the radio. I didn’t know one was for the radio light..The pink (or is it orange) wire that feeds the radio light.
You want switched power from the light switch or ignition (on when you start the car or on only when you turn the lights on?)
This is not the same year, so consult your wiring schematic
Here I would go to the power for Instruments on the fuse block
View attachment 1716461315
Check your schematic to find an appropriate spotWhen I turn the lights on I was thinking. I’ll look at my fuse block, just might be the place to plug it in. After all I need to plug in the power wire in there.
I'm wrong In '66 it looks like the power was tapped at the wiper switchFor 12 V powered tachs, copy the factory. Use the 'optional accessory' fuse slot
Yes, that connection was taken by the backup light switch on the steering column. Pink/black trace wire. Or maybe more to the purple color than pink.Many wiper switches had a bare switched 12 volt take off terminal. Handy for cb radios, even record players at a time.
I’m going to plug it into the fuse box. ThanksI'm wrong In '66 it looks like the power was tapped at the wiper switch
Factory tachs work off the pulse of coil negative.
At least in '67 they needed a 12 V power source that came from the auxilery/optional fuse.
Go to mymopar.com
Find the section that says Service Manuals.
Download the 1966 Plymouth Chassis manual.
In the back of the electrical section you'll find the wiring diagrams.
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Looks like in '66 power comes from a terminal junction on the wiper switch.
Fuse box may be a good spot for the lamp wire based on this one that was for sale.
View attachment 1716461562
FSM says B1 was Violet with tracer. You do have an FSM, right?Yes, that connection was taken by the backup light switch on the steering column. Pink/black trace wire. Or maybe more to the purple color than pink.
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