Help... Lights quit working 99 exec.

[lonestarace]

DH is driving back home in 42 ft 99 executive Monaco and last evening all lights quit except headlights ...... at last stop he always checks lights and everything was working fine, then at dusk dash lights, running lights everything except headlights just went out is there anyone that can tell me where to have him look for a fix.. he says switch is working in on/off mode but no lights.. thanks, lisa

[skipwil]

The fuses are the most likely place to start looking. A 12v test light will show 12 power across each fuse. A wiring connector may have vibrated apart.
Good luck.

[lonestarace]

well through out the day yesterday he tried them and in afternoon they all worked... go figure must be a short somewhere... thanks for the reply since day time driving will take him forever.. lisa

[lonestarace]

I bought a new to me 99 Monaco Executive 42' PLS 1300 miles from home. I checked all the lights before it got dark so as to be safe and legal and all was good . I tried to leave FL for TX a couple of hrs later, after dark, but the running lites were inop . They began working normally from mid-day the nextday. until I stopped driving at 11pm that nite . The next day, while daytime driving, I pulled the headlite switch to the on position and a couple of times I noticed the running lights came on momentarily after hitting bumps . Other than that, I've never got them to work again . When I push the momentary ICC light switch, all applicable running and headlites come on regardless of headlite switch position? I replaced the metal running light CB/relay in the electrical compartment with no effect? My guess is that it's a bad headlight switch ? But, I've tried jiggling the headlight switch/nob with no effect? Do yawl have anymore guesses? before I change the headlight switch.

[lonestarace]

Problem solved! While changing the switch I noticed the running lights flickering on and off when I jiggled the 12 wire harness that goes to it. I found a poorly crimped butt splice connector where I guess somebody splicedthe electric trailer brakes/lights controller was tapped into the system.

The application for my headlight switch is for a 74-75 International 1/2 ton pick-up-$18. The 73 Chevy C10 will probably work, but that switch has one less (unused) pin.