For those of you who think Chevrolet left room for improvement,
we offer the custom way to update your classic.

Customized wiring harness sets
for customized cars & trucks!

1947 (2nd series) - 1955 (1st series) CHEVROLET & GMC TRUCKS
(headlight -to- taillight system)
Part #500467

What is our Custom Update Series _TM Wiring Set?
In basic terms, it's the simplest way to update your classic vehicle's wiring with the customized upgrades you want installed.  (upgrades may include: newer steering column, H.E.I., alternator, aftermarket heater & A/C system, reproduction tail light assembly, updated gauges, etc.).  It is a complete car/truck wiring system.

This is not a fits-all system.  It is custom manufactured for a specific year & model vehicle; designed with the foresight, engineering and flexibility to bring your vehicle's electrical system up-to-date.  When you install this system, you will determine the routing of the wires to fit your needs.

This system has been designed with the power capabilities necessary to run separate options*.

*some of these options may include power windows, stereo systems, air conditioning, computerized fuel injection / ignition system, ABS / ride control, other computerized systems, etc.  Wiring for these types of options are not provided with the Custom Update system.

1. Accessory disconnect provided for connections to power windows, power seats, cruise control, fuel pump, power door locks, extra radio (CB) or optional power accessory.

2. New floor dimmer switch is provided. Wire length and connection accommodate original floor mount dimmer switch.

3. Standard turn signal flasher, hazard flasher, and horn relay mounted on fuse panel.

4. Fuse box and custom mounting plate are designed for bolt-in under dash installation. All required hardware supplied. Location selected for easy accessibility and clearance of under dash accessories such as all gauge packages, wiper systems, heat and air conditioning systems, and stock original or after market GM tilt steering columns.

5. Steering column connectors will plug directly into most after market steering columns as well as 1969 and later GM columns which utilize stock GM turn signal switches. The original column can also be wired by using the supplied mating connector and terminals.

6. Instrument Cluster wiring is designed with a “cluster harness disconnect” system for easy service and assembly. All original terminals, connectors, and light sockets are also supplied for original cluster gauges. However, the best aspect to the disconnect system is that any gauge cluster package can be easily and neatly wired in.

7. Heater control panel lighting, power, and blower motor leads are included for original style heaters as well as after market heat and AC updates such as HOTROD AIR, and VINTAGE AIR, etc. Connections are also wired in for the glove box and cigarette lighter.

8. Replacement headlight switch with internal circuit breaker included. Retention collar nut, adjustable length shaft, and custom knob are also included. Extra connectors and instructions are supplied for installation of original  headlight switches.

9. Front lighting includes extra long leads for special routing when custom under hood appearance is desired. All headlight, park light and directional light connectors and terminals are provided, as well as a switched trigger wire for electric fan relay (usually recommended with AC).

10. Rear body harness assembly is designed to plug into the main harness in the original position utilizing existing retainers. Flexibility in harness design allows for original or custom routing. Both pickup and suburban models are accommodated. Rear body wiring includes backup light wires and mating connectors for backup light leads. License plate lead, connectors, and terminals included. Fuel tank sender wire and terminal included. Leads and terminals included for jamb switches and dome light.

11. Engine wiring includes connectors for points type and H.E.I. distributors. Power and tach connectors supplied for GM H.E.I. distributors. Alternator connectors are supplied for GM “SI” series internal regulated and all “one wire” alternators. GM “CS” series alternator connector available separately.

12. Engine wiring includes starter and gauge sender leads for water temp, oil pressure, voltmeter, and tach. Heavy 8 gauge alternator leads are supplied. Power circuits are fusible link protected.

13. New ignition switch is included. Additional connectors and instructions are provided to use the original ignition switch or column mounted ignition switch.