The Gauge Doc The First Generation Charger (1966/67) has two unique features that were not available in any other Mopar of that era, Electroluminescent Lighting and Hideaway Headlights.
The 1966/67 Charger uses EL for the following lighting displays: Dash Instruments (66/67) Air Conditioning Controls (illuminated Push Buttons) (66/67) Radio Face and Dial Pointer (66 only) Console Shift Indicator (66 only) Console Clock (if installed) (66 only) In addition, the 1966 Charger uses an external tachometer sender mounted under the glovebox on the forward dash frame (next to the EL powerpack). The 1967 Charger uses an internal sending unit inside the tachometer. The Headlight Motor Man
Source for 66/67 Charger headlight motor rebuilding and limit switch replacement. He can also rebuild/restore other electric motors for classic Mopars.
Electroluminescent Dash Lighting (EL Lighting for short) The instrument panel consisted of four round Bezels with six gauges. Besides the normal instuments, there is a 6000 rpm tachometer. The gauges in the Charger are independently mounted in the cluster housing and are connected by the wire harness. All instruments in the cluster are illuminated without the use of normal 12V light bulbs as in other Mopars. This system, known as Electro-luminescent Lighting (EL), creates a soft uniform glow without objectionable intensity and glare. Light levels can be controlled in the usual manner with the headlight switch knob. The gauge faces and dials, composed of electrical conducting laminates, glow when alternating current is applied. Alternating current is converted from the direct current supply of the car by a transistor oscillator (Power Pack) mounted on the forward dash frame under the glove box. This power pack, supplies 250 volts A/C at 250 cycles per second (250 Hertz) from the 12 volt D/C car current. All gauges are of the thermal type and operate on the 5V constant voltage principal. This accomplished through the use of a voltage limiter connected in parallel with the gauges. Voltage limiters in all models except the 66/67 Charger are external plug-in type. The 66/67 Charger Model uses a voltage limiter integral with the "Fuel Gauge". It is important to note this difference if gauges are to be tested on the bench. Hideaway Headlights The grille used fully rotating headlights (180 degree) that when opened or closed made the grille look like one-piece unit. Hidden headlamps were a feature not seen on a Chrysler product since the 1942 DeSoto. The headlight assemblies are rotated open and closed by two independent electric motors, and operate when the lighting switch is pulled to the fully open position. Open and close limit switches are mounted in the grille, and along with a three relay set up (Open, Close, Control) behind the glove box (mounted to the inside firewall), control the opening and closing of the headlight assemblies. A HOLD OPEN switch on the dash allows the headlight assemblies to remain in the open position while the lighting switch is pushed in to the off position.
NOTE: For any 66/67 Charger gauge rebuild work, it is highly recommended the the EL powerpack and external tach sender (if 66 model) be sent in for testing. Both of these components need to work properly in order for the gauge cluster to operate correctly.
Bryan Ashcraft Has developed a plug and play electronic headlight relay conversion kit for the three headlight relays located behind the glovebox on the firewall.
gaugedoc@gmail.com (585) 615-0456