1989 Mitsubishi Canter
Parked truck up after driving came back to start there was no power to dash lights or ignition could not start then replaced batteys cleaned terminals (battery), traced electrical line back but could not locate where fuse box was. That may not be the problem either so could please advise what areas I should look at.
No power to ignition switch could be due to a bad fusible link. You would need a test light or DVOM to test and were the fusible links checked?
We don't have information on your truck so I do not have the location of the fusiblellinks or fuse box.
The fusible links would most likely be near the battery or starter motor and fuse box should be under dash at center or passenger side.