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New Hampshire CMP Barn 2011- 2012 HUP Overhaul
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11-06-12, 00:07
Phil Waterman
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Join Date: Feb 2003
Location: Temple, New Hampshire, USA
Posts: 3,929
Work on Lights and wiring harness continued
Spent another day working on the lights, connecting the wiring harness. Got all the original CMP lights working fairly easy. Just the normal stuff of poor grounds on freshly painted parts, easy to fix just remove a little paint.
Also did a little voltage testing to find the fixtures that didn't look as bright as they should. Used the volt meter to read voltage of the ground in the light fixture to true ground. If the voltage across the ground was significant went looking for cause. Also did resistance testing but that did not seem as reliable as looking for stray voltage.
The only real problem was with the modern tail lights, just could not get a noticeable difference when the tail lights are on and stepped on the brakes. Did a little measuring to confirm what my eyes were telling me. At one foot got the following readings:
Tail lights only - 22 Foot Candles
Brake lights only - 60-70
Foot Candles
Both tail and brake lights-30 Foot Candles
This really didn't make sense so checked for voltage drop and it looks like is the problem just the number of bulbs or filaments being lit is sucking the voltage down by 2-2.5 volts. Once I mount the battery I'll check to see if the problem goes away, for testing the battery was connected to the HUP with 14 gauge wire coming from the battery on the engine test stand.
But I really like Harry's suggestion of the LED replacements, more light less current being drawn. Just have to find the correct bulb replacements for 6 volt type 63 horizontal mount then vertical mount 1154 and 1129.
I really would like to know how they wired the dash. Just can not figure out an easy way to do it. The problem is the support for the steering wheel which blocks every thing. If you take the support out and wire everything then it is hard to get the bolts of the support in.
Best way I found for doing it is with nose off, take the dash and put it up side down on the window ledge. Then wire everything up and test it then remove the lower part of the steering support and swing the dash down some of the wires have to go be hid the support as does the speedometer cable and oil line.
Cheers Phil
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