1999 Freightliner Century Class Wiring Manual
Pablo, if you are doing wiring check the harnesses that go to the headlight modules. Where they cross from the frame to the hood is a real weak spot design wise. On my 2000 Century they slowly fray, and at some point I get really weird things going on with my lights and turn signals. The first time I went to rebuild the harnesses I discovered that they had been done before, maybe more than once. Another issue I had was with the brake cans. Moisture had built up in the air lines due to a bad air dryer. Little rust spots had built up and were wearing the rubber diaphrams out.
Freightliner Century Class For Sale
A little steel wool and elbow grease took care of that problem. The shock and air spring under the rear of the cab next to the exhaust wear out every couple of years, due the heat and temp cycling.
1999 Freightliner Century Class Parts
This is probably just specific to a Cat engine, but the cab heater hose is routed sort of close to turbo charger, so unless you have some thing to protect or block the heat the hose gets baked badly by the heat and will fail. I use a larger hose slid over the smaller hose. My tractor should hit 1.4 million miles some time next month. I have problem with my lights blinking when my turn signal or hazards lights flash on. All lights are affected, marker, head, cockpit, on both sides. I had two mechanics try to fix it, because I've got a 'fix it' ticket. The second one spend all day cleaning ground connections, charge me $ 600.00 yet lights behavior didn't improve a bit.
I ran a wire directly from battery ground to one of the bulbs and nothing changed. I ran a wire from the battery + to a marker light and it stopped blinking. So for me the problem is either on the positive side Still the mechanic insisted it is a ground issue, but I don't understand, because I am not a professional. It is always a bad ground and he's fixed many trucks with this problem.
I don't know if I should trust my common sense or his expertise. I think I am right, but I can't fix it either.
If I had a wiring diagram it could help, as would anyone with similar experience. I appreciative your time.