2004 W22 blown ignition B 50amp fuse
Lost dash ac,radio,rear camera,level jacks,slides,step retract,abs light on,next day no problem can't find what caused it to blow
Forum Discussion
I've got a better idea for you to start out with. Use a clamp on DC ammeter over this feeder wire. Then turn on ALL IGNITION 2 (accessories). Flip your ignition switch ON, then measure total current. How many amps? Write it down.
Leave Everything turned on (have the engine running if you wish)
Then
Cycle the jacks
Did it blow the fuse? If so, WHEN? When you first toggled the jack switch or after a few seconds? If instant failure, turn off accessories and test the jacks by themselves.
If the fuse blows when the trailer jacks are working, no big deal. Install a TYCO relay and 30 amp self-resetting circuit breaker. Fuses have a weak feature. They can get hot again and again and again, and anneal to become softer and softer. They can sag (you can see it). Then they'll break. They'll break under a 5 amp load if the wire shunt gets brittle enough. The trick is to not load the fuse close to it's capacity.
Leave Everything turned on (have the engine running if you wish)
Then
Cycle the jacks
Did it blow the fuse? If so, WHEN? When you first toggled the jack switch or after a few seconds? If instant failure, turn off accessories and test the jacks by themselves.
If the fuse blows when the trailer jacks are working, no big deal. Install a TYCO relay and 30 amp self-resetting circuit breaker. Fuses have a weak feature. They can get hot again and again and again, and anneal to become softer and softer. They can sag (you can see it). Then they'll break. They'll break under a 5 amp load if the wire shunt gets brittle enough. The trick is to not load the fuse close to it's capacity.
