Returning home from Alabama last week, it was after dark and 45 miles from home, my headlights started going off. I would play with the dash switch and the high beam switch and the lights would come back on, this on and off went on for several miles until the rest stop appeared. I got off to the check wires and the switch, I could find no problem and the headlights stayed on at the rest stop and for the remainder of the trip home. We had turned the inverter on to run the ice maker not long before this problem started and my wife turned it off just before we stopped at the rest area. I don't understand how it affected the lights. I had good voltage and my dash lights never flickered when the headlights went out. Any ideas? After crawling under the front I realized the steering box has a leak so I have a new item to spend money on. If anyone has suggestions on anywhere near ATL where I can get that repaired I will appreciate any and all options. Not sure I have the time or experience to tackle that after checking the posts here on the forum. I'm thankful for this group!
I travel with headlights on for safety. On a recent local trip my wife driving in front in the car noticed the headlights (after about 45 min of driving) were pulsing on-off-on-off.
Long story short, FOT discovered my isolator had bad diodes and needed to be replaced. The alternator was sending 14.6 to 15.7 volts back up through the 12 v system. We also replaced other relays, solenoids, switches, etc that seemed to need replacing/repair. Check your isolator to see if it is "isolating".
Just my recent experience but that headlight pulsing was unique.
I would recommend in Atlanta for service work
Maybe.
But on the 1993 U240, it is all fuses. Under driver's side of dash. Visible when dash is flipped up.
Lots of grounds on the far outboard side.
I would start by tightening those and any other connections you can get to.
As I recall there are relays for headlights in the same area.
Forgot to read the signature. I was referring to later coaches such as ours. Follow Brett's advice.