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Author Topic: horn air compressor  (Read 683 times)
uemjg
jerry
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« on: October 08, 2012, 12:52:38 PM »

I'm trying to power my 12 volt air horn and can't find a 12 volt spot to connect.  This is a 75 MCI-8.

Or am i better off getting a 24 volt air compressor?

Suggestions?
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PCC
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« Reply #1 on: October 08, 2012, 12:59:49 PM »

If you have 2 - 8D batteries, or other combination of 12 volt batteries to make 24 v, take a line from the connecting wire that goes between the battery/ies.

The connecting wire will be the one that goes from the positive of the battery/ies whose negative connects to the frame, to the negative of the other battery/ies. That point will give you 12 Volts positive to your compressor.

The negative wire from your compressor will then connect to the frame.
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luvrbus
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« Reply #2 on: October 08, 2012, 01:01:54 PM »

There is a 12 volt connection at rear panel I don't know about the front maybe the MCI guys know for sure but I think it is 55 or 58

good luck
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thomasinnv
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« Reply #3 on: October 08, 2012, 10:57:24 PM »

The mc8 had a 12 volt option which included a 12 volt lug at the front panel, AC panel, and rear panel. Stud 55 in the front, stud 6 in the AC panel and stud 41 in the rear. All on circuit #23.

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There are three kinds of people in this world....those that make things happen, those that watch things happen, and those that just wonder what the heck is happening. Which one are you?

1977 MCI Crusader MC-8
8V71N/740
95% converted (they're never really done, are they?)
TomC
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« Reply #4 on: October 08, 2012, 11:11:39 PM »

It sounds to me like you're trying to use an air horn with its' own air compressor.  Why do that when your bus has its' own air supply.  Just buy either a 12v or 24v air solenoid and hook into the buses air system.  Good Luck, TomC
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Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
Oonrahnjay
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« Reply #5 on: October 09, 2012, 07:53:20 AM »

It sounds to me like you're trying to use an air horn with its' own air compressor.  Why do that when your bus has its' own air supply.  Just buy either a 12v or 24v air solenoid and hook into the buses air system.  Good Luck, TomC

     That's what I was thinkin (and what I'm doin ...)
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Bruce H; Wallace (near Wilmington) NC
1976 Daimler (British) Double-Decker Bus; 34' long
6-cyl, 4-stroke, Leyland O-680 engine

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