Interpretation ID: nht88-1.81
TYPE: INTERPRETATION-NHTSA
DATE: 03/28/88
FROM: DON O. HORNING -- P. E. INDUSTRIAL TESTING LABORATORIES
TO: C-MORE-LITE, JERRY'S SERVICE
TITLE: TEST REPORT NO: 92606
ATTACHMT: ATTACHED TO LETTER DATED 08/19/88 TO DOUGLAS H BOSCO, FROM ERIKA Z JONES, REDBOOK A32 (2) STANDARD 108 LETTER DATED 06/16/88, TO ERIKA Z. JONES, FROM DOUGLAS H. BOSCO; LETTER DATED 08/03/87 TO DOUGLAS H. BOSCO FROM ERIKA Z JONES; LETTER DATED 0 6/09/88 TO JERRY K YOST FROM L. FROLLIN; 1988 LETTER TO ERIKA Z. JONES FROM JERRY SERVICE
TEXT: Enclosed is the photometric data taken on the Halogen H4651 Single Filament Sealed Beam Headlamp and the Halogen H4656 Dual Filament Headlamp.
The two headlamps were mounted on a standard text fixture placed on the goniometer and aimed per specification SAE J579, Dec 84. Candlepower readings were taken at the appropriate settings with both filaments energized on the H4656 headlamp and with the single filament energized on the H4651 headlamp.
These readings were combined to simulate the operation of the C-More-Lite Headlight relay which activates both filaments on the 2-filament headlamp as well as the single filament to effectively provide both low beam and high beam illumination when the hi gh beam is switched on.
The accompanying table of photometric results at 100 ft were made with the aim established per SAE J579, Dec 84, Section 3.4 and the voltage at 12.8 volts. As indicated at the bottom of the table, the maximums could not be combined, as they did not coin cide as to location. Adjusting either lamp to the location of the other maximum did not produce a combined maximum in excess of the permissible maximum of 75,000 cd.
No tests were run utilizing the C-More-Lite relay in the circuit. tests run only simulate the effect of its operation.
As a part of this report a copy of SAE J579, Dec 84, is included for substantiation of test points and maximum and minimum cd. There is also included a diagram of the measurement points combining both upper and lower beams.
It should be noted that this laboratory takes no position relative to the C-More Relay as regards its utilization.
Description of Headlamps used: ITL TEST NUMBER 92606
1. Lamp Halogen H4651 - 4x6 1/2 inch sealed beam headlamp Westinghouse Headlamps by Philips (Assembled in Mexico) High Beam for 4 head light system Replaces 4651, HP4651 2 lugs - 12 volts Marked - 1A1 Sealed Beam, Halogen, U.S.A. DOT.
2. Lamp Halogen H4656 - 4x6 1/2 inch sealed beam headlamp Westinghouse Headlamps by Philips (Assembled in Mexico) Low Beam for 4 headlamp system Replaces 4656, HP4656 3 lugs - 12 volts Marked - 2A1 Sealed Beam, Halogen, U.S.A. DOT.
[TABLE OF PHOTOMETRIC TESTS H4656 AND H4651 SEAL BEAM HEADLAMPS, ITL TEST NO 92606, OMITTED]
[SAE J579 STANDARD OMITTED]
LOWER BEAM & UPPER BEAM (CHART OMITTED)