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CumminsApart
CumminsApart, Cummins Technician
Category: Heavy Equipment
Satisfied Customers: 89
Experience:  Factory trained Cummins Technician- Automotive, Agriculture, Marine and Power generation
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I need a wiring diagram for a 400 cummings jake brake. Is

Customer Question

I need a wiring diagram for a 400 cummings jake brake. Is this possible to get?
Submitted: 8 years ago.
Category: Heavy Equipment
Expert:  jlpdevelopments replied 8 years ago.
If you have the engine number you can go to http://quickserve.cummins.com and sign up for a login where you can obtain engine repair manuals and wiring diagrams and much more but it will cost you usually around 50 bucks but very worth it if you plan to be the one to work on the engine.
Expert:  CumminsApart replied 8 years ago.
Hi There,

You will not be able to get the wiring diagram you need from the above URL. Here is a basic wiring diagram for your engine (use the second 3 stage one).Jacobs WiringGood Luck
Pete



Customer: replied 8 years ago.

 

what would I need for a fuse size to put in between the on and off switch and power point?

Expert:  CumminsApart replied 8 years ago.
Hi There,

You can use an inline 3AG type fuse holder and 25 amp fuse should be ok. Be sure to use a good non plastic cover for your harness to protect it from the exhaust and engine heat.

good luck
Pete
CumminsApart, Cummins Technician
Category: Heavy Equipment
Satisfied Customers: 89
Experience: Factory trained Cummins Technician- Automotive, Agriculture, Marine and Power generation
CumminsApart and 2 other Heavy Equipment Specialists are ready to help you