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I just pulled out the factory tach to clean it up and adapt the solid circuit update board. I noticed the terminal on the back (on the right in the photo) does not have an insulator type washer on it like the terminal on the left has. Does that mean it is missing the washer or was it never...

Back when I was studying Auto Tech at community college (circa 1973) I don't recall seeing a point set with the condenser and points as an integrated unit. I was sold these set as being compatible with our '65 Abodies. However, now that I take a second look at it, I wonder if there should be a...

I would like to know if a company manufactures (or anyone clever has fabricated) a way to piggyback onto an old style glass fuse? I just want to tap into the instrument/dash panel illumination so that my aftermarket oil pressure gauge can be read after dark. I just don't like splicing into...

I have low beam, but when pressing the floor switch for high beam the headlights go out and the ammeter goes to full discharge. I wonder where the first place to look would be? Thank you.

Most all the on-line discussions about electrical glitches eventually end without the original poster ever resolving the problem and leaving the reader with the same/similar problem still without a solution. So my intention is to follow this thing through to the end. Regarding the '65 Plymouth...

Our '65 Signet has dual horns, one wire stays put while the other continues to fall off. Upon examination, I don't notice any difference between the two. Any remedies you know of? Thank you.

I like the idea of the 2-56 screws used to repair the circuit board that was posted on for C Bodies only. I was wondering if anyone knows if the ABody circuit boards use the same size pins? Thank you. Instrument Cluster Repair

We have a 1965 Plymouth Valiant Signet Convertible with no accessories (manual steering, manual brakes, no A/C, no radio) just has a heater, horn, and 6014 headlamps (factory were 6012). However, evidently a previous owner installed a radio which is now missing (but there are dual radio antennas...

The "Made in Taiwan" ignition switch I recently purchased to replace the factory switch in the '65 Valiant Signet convertible has an extra terminal labeled "GRD". Physically, I can still plug it in, but what happens if I do? in photo, the "GRD" terminal is shown in the upper left quadrant. Thank...

Just to widen my basic Mopar knowledge base, who knows what model year Chrysler changed over from the older two-wire alternator to the newer three-wire alternator style? Thank you.

Today I picked up an old school voltage regulator still in the box at my old school auto parts store here in Mexico for about $9.00 USD.

1965 Plymouth Factory Technical Manual on page 8-109 lists the positive cable from battery to starter as a size "6B" black cable. Does anyone know what is meant by the "B" in the size designation? Thank you.

Would a single-point distributor give up anything with respect to performance to a dual-point distributor for a strictly street/highway application? Thank you.

I set a pair of old school 1034A mini-bulbs (painted yellow) on a green t-shirt on the inner fender of the '65 Formula S to find if the filaments were still viable. I used the installed Optima battery along with a pair of wires (one red, one black) with alligator clip ends for the testing. I...

I don't know anything about these early A circuit boards. I do know this: no dash lights, no turn signal light on dash, no gauges working and not sure about the high beam light. The oil pressure sender is not connected so that won't be working regardless. I removed the circuit board from the...

Headlamp switch on the '65 Formula S had a problem (no dash lights). The old/original switch I removed has a Mopar Part number 2580463. I did not want a "China" piece so dropped by the old school auto parts counter in town "Logan". The owner/employee (only the owner works there) took one look at...

With only a partially assembled wiring harness, I failed to find the reason for the reverse lights not working on a '65 Formula S Barracuda. After consulting the wiring diagram, I found the power source for the reverse lights is a white wire that comes from the wiper motor switch/harness. With...

Both the '65 ABodies here (Signet convertible and Formula S) have a hole in the sheet metal under the battery trays thanks to years of acid drips. The green battery tray in the photo was fabricated here (in Mexico) and now its time to fabricate another one for the second vehicle (see the factory...

On our '65 Valiant Signet convertible, I don't see the metal "jumper" strap everyone speaks about that provides a ground for the fuel level through the metal fuel line. Of course, my gas gauge doesn't work either. But regardless, I don't even see room to place the jumper strap. Is it possible...

Is the wiper connection open to the cowl as in the photo or did the factory seal it in that location? ('65 Barracuda) Thank you.

When installed on the vehicle, does the bulb insert from the top going down into the socket? Or is the socket upside down and the bulb is inserted from bottom going up into it? Thank you.

I see in the fuse variety pack I recently purchased at Autozone, the smaller amp rating fuses are not the automotive 32 volt style, they snuck in some 250 volt (1 amp, 2 amp, 2.5 amp, & 3 amp). The '65 Formula S calls for a 2 amp instrument panel fuse and I'm sure it should be the 32 volt rated...

From the 1965 Plymouth Factory Service Manual page(s) 8-50 and 8-59: The ballast resistor is a compensating resistance in the ignition primary circuit. During low speed operation, when the primary circuit current flow is as high, the ballast resistor temperature rises, increasing the...

How does the passenger side dome light get routed over from the driver's side? Does it just tuck under the headliner somehow? I notice there is a "nub" that should snap into a hole somewhere (see photos #2 and #3 for nun location). Thank you.

I imagine the sensors for electric gauges seek a ground through the same threads used to attach the to the block or manifold. I wonder if the Permatex #2 I use is inhibiting the ground path? What are you using the guarantee a leak free but satisfactorily functioning sensor? Thank you.

For a vehicle that never sees the track is there any difference in performance single point vs dual point? Just curious. Thank you.

That contact spray stuff does practically nothing for me on brass contacts (seems like brake cleaner to me). Looking for something more efficient. One presenter below recommends disassembly of the plastic cover/connectors (I hope that is not mandatory, don't have the patience to disassemble all...

I see three "hooks" that secure the wiring harness (or single wire?) on the steering column support of the '65 Formula S. Two of them are "run-of-the-mill" rubber coated hooks. But the third hook, which points down toward the floor, has no rubber coating, and shares a common fastener with the...

Assuming the wiper motor itself is performing satisfactorily, what is recommended (and possible) before re-installation of this '65 wiper motor and linkage? My searches today brought up some pretty sketchy information. The three rubber bushings are shot, we are missing one of the rubber bushing...

I am not all that adept at electrical testing. Specs for factory ballast resistor I looked up are 1.2 ohms. My Actron multi-meter has ohms scales of "200", "2k", "20k", "200k", "2m", "200M", so you can see how a rookie "electrician" may be confused using the meter. So how many ohms are 1.2? Are...