JWR Bugeye Wiring Diagrams

We prefer to use an unconventional approach to diagramming the Bugeye’s wiring. We like to use photographic images to help the eye quickly identify the subject one is looking to find.

The wiring is depicted in three different ways: The first depicts the wiring as connections from the fuse box wiring positions 1- 34; the second shows the wiring according to the electrical device such as a light switch or the alternator, and the third shows the wiring based on the connector to which a wire is assigned.

With an I-phone or I-pad one is able to easily enlarge sections of a diagram with just a “pinch” of the screen, making diagnosing a problem on the side of the road a much simpler proposition when compared to the old days.

These will likely need some updating as we complete the wiring to the front and rear of the car, but changes should be minor.

JWR Bugeye Power Distribution to Fuse Box

JWR Bugeye Electrical Wiring by Component

JWR Bugeye Deutsch Connectors Wiring

Building and Testing the Wiring Harness

Yes, in building a new electrical system for the Bugeye we wanted to add additional circuit fusing protection, we wanted to add relays to take the load off of switches, we wanted to add “personalizations” for safety and convenience but perhaps as much as anything, we wanted to eliminate or at least minimize this:

Working Under the Dash

Anyone who has done it, knows that working on the dash wiring while lying on one’s back is just no fun in the little Sprite. So, we wanted to construct a wiring harness that would take advantage of modern electrical connectors (Deutsch connectors) to make it possible to essentially “unplug” the dash with all of its gauges and wiring in tact and remove it from the car. The water temperature/oil pressure gauge, choke cable and the heater switch complicate this proposition a little, but disconnecting them for removal are minor compared to lying on your back on the floor of the car!

The previous post, “A New Electrical System,” detailed all of the electrical system modifications we are making in the Bugeye. This post covers creating, testing and removing the central wiring harness that serves the engine bay and the dash. Three videos were created to show the process.

Later, we will build the wiring harnesses for the bonnet and for the rear of the car.

The following Bugeye Restoration video episode fifty-three covers the initial work done on the wiring:


0:00 – Fuse box, power supply to fuse box

2:30 – Deutsch connectors, wiring routing

5:25 – Hella horn wiring

7:00 – Deutsch connector from body harness to bonnet harness

8:00 – Removing the harness from the car

9:00 – Disconnecting the wiper controller

10:00 – Harness removed from the car

10:25 – Taped harness

Bugeye Restoration video episode fifty-four covers the fabrication of a switch and control panel hidden behind the dash. The panel includes toggle switches for the radiator electric fan, the courtesy interior lights, the driving lights and the fuel pump selection. The hazard flasher switch, the rheostat for the wiper speed controller and a combination voltmeter and USB port are also mounted on the panel. The video then focuses on the wiring for the gauges and switches on the dash.


0:00 – Supplemental control panel behind the dash

2:05 – dash wiring

3:12 – Fuel gauge

4:00 – Magnetic wiring clips

4:25 – Speedhut Speedometer and Tachometer

7:15 – Ignition and light switch

8:40 – Panel lamp switch

9:00 – Turn indicator switch

9:15 – Hazard flasher diodes

Bugeye Restoration video episode fifty-five covers the testing of the wiring circuits before the central harness is removed and taped.


0:00 – Testing the wiring harness and the connectors

3:00 – Wiper controller

3:10 – Toggle switches on the control panel