Re: A/C blower motor hop-up?
This is another example of ďa solution in search of a problemĒ.
Replace the worn out old blower motor, clean your connection (power and ground). Replace the in-line 30 amp fuse if the end barrels are oxidized, clean the fuse holder contacts and check your voltage at the blower on high vs. what the system voltage is when the engine is running.
Donít move the power feed. In the factory configuration, the horn relay buss bar is your main power distribution point and has the higher system voltage when things are operating normally. Moving the power feed to the battery (+) will only add a non-designed burden on the charging line circuit.
People need to realize these systems were designed specifically with options and charging requirements in mind.
Changing the motor to something else entirely means you need to calculate the current demands because the motor speed control resistors are designed for a specific load in mind, deviation will affect the voltage drop across them and could adversely affect the wiring if not planned out.
What people donít think about is the fact the squirrel cage may be filthy, blower motor is kapoot, corroded connections and ducts that leak worse then the Titanic due to the old polyester foam seals deteriorated into dust.
-If you don't stand for something, you'll fall for anything.