97 Prevost H341 Coach No Crank No electrical power

[buswarrior]

Try shutting all down, disconnect and reconnect your jumper, and maybe VROOM?

Depending on vintage, one start attempt per "key-on" is all you get, so dumb driver doesn't engage starter when it is already running.

Your jumper wire acts like a permanent "key-on".

Shooting in the dark, yours might not be like the newer ones?

Happy coaching!
Buswarrior

[luvrbus]

I have a feeling if you clean all the plugs,grounds and connections at the ECU on the Allison your problems will go away

[robertglines1]

still haven't shared much information about yourself.  I don't answer if your profile is blank. Go with grounds first then check starter solenoid as there is a disk in there that gets corrosion or hot spots on it.  prevostcar.com   last letter in your serial # plus last 4 numbers---tech manuals.That is general knowledge.

[mick10]

Problem Solved thanks  to    luvrbus and others on this board suggestions.

With the help of a great Volvo tech from 401 Truck Source he found the corroded transmission fuses and spliced in new fuses.  In addition he found a bad connection at the dash power switch and rewired it. 

Looks like water was entering the rear electrical box causing the issues.

So there were 2 different electrical problems which made the diagnoses difficult.

Again, this site has been very helpful and much appreciated.

[robertglines1]

welcome glad you updated your profile.