June 23, 2018, 07:05:13 PM

Author Topic: Bus wiring diagram  (Read 2363 times)

Offline Superiorfab

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Bus wiring diagram
« on: March 26, 2007, 01:50:35 PM »
I am in need of a wiring diagram for a 1985 Houston Metro model 10 bus with a 748 Allison automatic transmission with a retarder.  Can anyone help me figure out the wiring on this bus?????

I need to know the wires that go from the retarder relay to the transmission brain box under the dash, etc.  A diagram would be helpful as I need to know the wire numbers.  I am in the process of trying to convert this old passenger bus into an entertainer bus for some friends who sing gospel music. 
« Last Edit: March 26, 2007, 06:47:11 PM by Superiorfab »

Offline pete81eaglefanasty

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Re: Bus wiring diagram
« Reply #1 on: March 26, 2007, 06:37:23 PM »
 What part are you trying to figure out about the wiring An I guess it is a Eagle bus you are talking about, we don't know to help you.


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Offline Superiorfab

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Re: Bus wiring diagram
« Reply #2 on: March 26, 2007, 06:54:04 PM »
I need to know the wires that go from the retarder relay to the transmission brain box under the dash, etc.  A diagram would be helpful as I need to know the wire numbers.  I am in the process of trying to convert this old passenger bus into an entertainer bus for some friends who sing gospel music.

Offline NJT 5573

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Re: Bus wiring diagram
« Reply #3 on: March 26, 2007, 09:44:15 PM »
My 89 is DDEC/ATEC. The retarder is actuated by the foot treddle valve. I have a push button shift selector. Is this simular to what you are working on? I have the original 1989 NJT service manuals and can research. Did you cut your wires? Do you have the retarder "off" lite on the front of the 85? For some reason, I think the computer was mounted on the transmission in 1989. Mine barely works until I reach the last stage of the treddle valve, then it stops on a dime.
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