Blown Fuse

73VEEWEE · Posted: Wed Dec 05, 2007 7:59 pm Post subject: Blown Fuse

I have a 15 amp fuse on a line that comes off of the positive terminal of my battery and leads to a connection under the drivers side rear seat. It blows everytime I try to start my 73 standard beetle. The car has been running fine until I tried to start it last night. Put a new fuse in, tried again, same result. Not quite sure what to do next. Any advice would be appreciated.

baked beetle · Posted: Wed Dec 05, 2007 10:21 pm Post subject:

do you have a bentley or the like. It has every wiring diagram needed.

IF it only happens when your starting the car check the starter wires under the car. Make sure the ground strap is on the battery. I don't know what else really, Generator/Voltage reg.

Most likely the starter.

jamesdagg · Posted: Wed Dec 05, 2007 11:24 pm Post subject:

I don't think a manual is going to help. A '73 std. should only have an 8 amp fuse under the seat for the rear window defogger if equipped and that might blow if the switch was left on and it had a short, but it would not affect the motor.

That large a fuse attached directly to the battery could be for a PO added starter relay. Unless the connection under the seat is to the regulator then it would be a main fuse which new cars have called a fusable link. VW's should have one. I added one but it would need to be bigger. 30 amp with a generator, 50 with an alternator.

You will have to be more specific where it goes.

Cusser · Posted: Thu Dec 06, 2007 1:53 am Post subject:

Does that wire go to a voltage regulator under the seat? Can you post a picture?
_________________
1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297

73VEEWEE · Posted: Thu Dec 06, 2007 4:32 am Post subject: Blown Fuse

I had a new alternator installed with a built in voltage regulator. I think you're right, this might be part of the starter relay. This hot line with the fuse connects to a junction under the seat and I have not had time to trace where the other lines lead to. I was considering disconnecting the wiring to the starter and see if I still have a short.


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