View Single Post
Old 07-14-07, 12:00 AM   #19 (permalink)
CESLAW
3 Tenths
United States
 
Join Date: Oct 2006
Location: Illinois
Posts: 361
Rep Power: 5 CESLAW is a glorious beacon of light
Re: Chuck and Ryan's RCR Build

Despite a hectic work schedule, we have squeezed in a few hours of build time. We spent some time studying the fit of the body and making plans. Then the body panels were all removed and stored away as were the roll bar and fire wall. At this point the dashboard seemed like a good place to start.

A template was made for both right and left panels after giving some though to switch layout. Switch panels were easily fabricated out of aluminum, holes for the switches drilled out with a step drill, and an opening cut in the fiberglass dash to clear the switches.

Lucas switches were selected. Lucas is not known for their quality, and when the switches arrived what we saw confirmed that reputation. Indeed upon opening one of the boxes containing a simple single throw single pole switch, a collection of parts fell out. The switch had fallen apart in the box!

As one studies photos of original GT 40 dash panels it becomes apparent that there is no single proper brand of switch. One could find a prototype to justify the use of most any reasonable switch. But the Lucas switches can be seen in many period photos, so they seemed to be an appropriate choice.

But more significantly, Lucas makes specific switches for specific functions. A dedicated wiper switch, #35927, permits a single switch to operate the wiper in low or high and take advantage of the ‘park’ feature. A dedicated headlight switch, #31788, permits operation of the parking lights in the first position and both the parking and headlights in the second position. The headlight dimmer switch, #34899, is a matching companion to the headlight switch. The turn signal switch, #31743, has an appropriately longer toggle. An assortment of single pole single throw (SPST) switches, #SPB200, will operate the fuel pumps, driving lights and other functions.

The switches were ordered from Finish Line, www.Cobraaccessories.com. When the package arrived, we inspected the SPST switches first. Most had loose housings. A well placed pinch with a large pliers tightened them up. The one that came in pieces was reassembled and got an extra pinch. The remaining switches appeared to be in good condition.

Out next task was to check the switches with a volt ohm meter to confirm their electrical integrity. The function of the various terminals was identified and labels attached for ease of wiring after they are installed in the dash panel.

The switches were temporarily placed in the aluminum panel. We had considered leaving the aluminum panel natural, but now expect to paint it matte black, like the original cars. Next project will be cutting out the instrument openings.
Attached Thumbnails
Click image for larger version

Name:	LucasSwitches0407.JPG
Views:	1882
Size:	119.2 KB
ID:	21958  Click image for larger version

Name:	DashOpenings1.JPG
Views:	1861
Size:	188.9 KB
ID:	21959  Click image for larger version

Name:	dashPanel2.JPG
Views:	1852
Size:	83.2 KB
ID:	21960  
CESLAW is offline   Reply With Quote