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Juan Crespo
Juan Crespo, ASE Certified Technician
Category: Dodge
Satisfied Customers: 1516
Experience:  A.S.E. Master Technician, Advanced Level, Emissions - Asian, Domestic, & European
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Fuse 15 is if I replace it blows as soon as I plug in? What

Customer Question

Fuse 15 is blown if I replace it blows as soon as I plug in ? What does fuse 15 control ? Where might I start to locate short ?
Submitted: 5 months ago.
Category: Dodge
Expert:  Juan Crespo replied 5 months ago.

Hi there.

On all 1991-93 Ram D350 trucks, fuse 15 protects the circuits to Radio & Clock Memory, Power Mirror Interior Lights and Underhood Light.

Please let me know if you need further assistance tracing this short.

Customer: replied 5 months ago.

Do you have a fuse box Diag I also have zero brake lights !

Customer: replied 5 months ago.

This is a a van ram 350 with a 5.9

Expert:  Juan Crespo replied 5 months ago.

Do you mean a diagram of the fuse box showing fuse location and ID? Is that 5.9 a Cummins diesel?

Expert:  Juan Crespo replied 5 months ago.

OK. On the 1992 B350 Ram Vans, fuse 15 protects the stop lamp circuit - so that's why no brake lights. I'm attaching a diagram from Mitchell showing the fuse box and not much more in the way of wiring details.

Being a retired Chrysler/Dodge tech, my database is mostly oem stuff and there isn't a lot on these old trucks, but let me know and I'll try and look up whatever you need that can help you locate this short.

Customer: replied 5 months ago.

Yeah I'm going to need a wiring Diag for fuse 15 and brake lights. I've disconnected all the trailer stuff and eyeballed all I can ! And fuse still blows.

Expert:  Juan Crespo replied 5 months ago.

OK. Here is the OEM diagram in two parts.

Please let me know if you need further assistance.