07-01-2008, 01:21 AM
Very good advise etech! Applying "ohms law" is something many forget in restoring these old radio chassis indeed! Most of those old AC trans are "built like a tank", but it is always better to be safe than sorry!! Wish it was as easy to "dispense" 6 volts DC from a 12v DC battery when restoring vintage 6 volt DC auto/truck radios! Whew, Ive wound several turns of "nichrome wires" in the past, on old porcelain type power resistor bodies to acheive the same results when dispensing incoming DC current on vintage auto electrical systems. Those homebrew ( 12 volt DC stepdown to 6 volt DC) homebrew resistors get "hot" in a hurry!,... but do the job!! Sure beats folks buying the new high$ DC power-invertors for vintage auto collectors that have "up-dated" their vintage orig 6 volt DC vehicles to 12 volt systems over the yrs.
I also remember back in the old-days, of converting old orig 6 volt auto/truck radios wiring that used a "positive ground system", by reversing all wires on the vintage engine generators, and underdash to the dashboard guages.
Those old automotive type DC generators "reverse polarity" automatically when wiring is setup accordingly. Ah,... the momories!!
I also remember back in the old-days, of converting old orig 6 volt auto/truck radios wiring that used a "positive ground system", by reversing all wires on the vintage engine generators, and underdash to the dashboard guages.
Those old automotive type DC generators "reverse polarity" automatically when wiring is setup accordingly. Ah,... the momories!!
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