|
|
|
|
|
#1
07-02-2011, 12:19 AM
|
||||
|
||||
|
Part of my fuse box is dead...
Was fooling with the AC tonight and I was going to show a buddy the Becker Wonderbar. No wonderbar, no parking lights, no turn signals.
A quick check of the fuse box revealed a bunch of circuits are dead at both sides of the fuses. I figure the "hot" side of the fuses must be towards the cabin. Someone jumped some wires in the box to power the front windows but I was going to sort it out later. I guess now is the time... No blown fuses, nothing melted etc... Any ideas on where to start?
__________________
My occupational hazard bein' my occupation's just not around... 1980 300SD 1980 300SD 
|
|
#2
07-02-2011, 12:21 AM
|
||||
|
||||
|
Some things, like the headlight fuses, will only get power when that light is on. Other stuff will only have power when the key is in the run position. I'd guess there's something wrong with your ignition switch.
I'd look at a wiring diagram and see if Mercedes used some kind of load reduction relay, or if all the power for those systems (lights, wipers, blower, signals, etc) goes right through the ignition switch. -J
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket  Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E. Last edited by compu_85; 07-02-2011 at 12:32 AM.
|
|
#3
07-02-2011, 12:23 AM
|
||||
|
||||
|
That sounds like good advice - but just in case this helps => try cleaning the contacts in the fuse box and the fuses they can get a bit corroded.
__________________
1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior  Don't leave that there - I'll take it to bits!
|
|
#4
07-02-2011, 12:35 AM
|
||||
|
||||
|
Thanks guys!
The ignition switch was... well... err... Unplugged... I was about to start taking fenders off...
__________________
My occupational hazard bein' my occupation's just not around... 1980 300SD 1980 300SD
|
|
#5
07-02-2011, 12:27 PM
|
|||
|
|||
|
Some circuits are also looped and pass through the fuse box twice. For example the path for the fogs on the W123 goes from battery to headlight switch to fusebox to headlight switch to fusebox to the lights. Maybe with a detour to the stalk switch thrown in for good measure.
Depending on the switch positions both sides might appear dead.
|
 |
| Bookmarks |
|
|
Linear Mode
