1999 Airstream Cutter cranking issue

[rockytopham]

Start of the season, all batteries are charged, kill switch is turned to the run position and I get nothing when the key is inserted into the ignition switch. Checked all fuses and had battery tested with satisfactory results, checked all resources and cannot solve problem. Open to solutions please!

[Isuzusweet]

It is always good to include as much information as possible, diesel/gas, engine type?

IMHO it most likely is the solenoid that sends energy to the starter. My solenoid is beside the battery box and looks like this.....

http://www.agcoauto.com/content/news/p2_articleid/254

https://www.youtube.com/watch?v=psqxVvU5Hig

Yes I know it's a Ford video but I have the very same setup with my Isuzu diesel powered 310 using the same 4 post solenoid.

TIP: Clean all terminals of the old one first as it could be just corrosion.

Cheers
Tony