Quote:
Originally Posted by rangrbob
I recently purchased a Classic Retrofit fuse block upgrade for my 71. After installing it and confirming all the wires were attached to the same positions they came off the old fuse block, I reconnected the batteries and tried all the switches. Most everything worked the way they should, however, there were a few issues.
The low beams would flash when hazard warning lights were activated.
When the right turn signal was initiated, the headlights and fog lights would flash as well.
When the high beams were on the fog lights and right rear brake light would come on as well.
The high beams would stay on even if I pulled their fuses.
All grounds where checked and were good, and I double checked the wiring with photos and the wiring diagram.
I removed it and re-installed the old block and everything works the way they should. Since electrical parts are not returnable, I’m hoping the community may be able to help. I’d hate to have wasted $400.00.
Any thoughts or ideas where to look would be appreciated.
Thanks
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Firstly, I can categorically say there are no design issues with any fuse panels we sell. The design has been the same for a few years now and well over 1000 units in service covering all model years. Manufacturing issues are very rare and would not cause the type of issues described.
There is some re assignment of fuses required for installation in a '69 car as the busbars are different. All other long hood models have the same bus bar arrangement.
Firstly, check that the busbars on the back of the original blocks match the bussed terminals on our panel. These are indicated by white bars on the front of our panel between the terminals. If that is not ok, then your original fuse blocks are likely not correct and that will be at least part of your problem. As said previously, we know the '69 busbars are different but all others are the same.
I know you have said that you doubled checked but the most likely explanation is still a mis wire. It is very easy to forget to skip a gap on the output side of the fuse. Did you take on board that the relay marked 'H' is extra and not to be included in the like for like swap over?
Observations:
1) all your issue are lighting based. Lighting is on the lower 10 fuses
2) head lights flashing with turn signals would be consistent with having the turn signal wire offset by one terminal as they are side by side.
3) if all the remaining iighting wires were out of place by one terminal you would get a confused lighting arrangement for sure.
4) I can't explain the rear brake light coming on since these lights are not fused and have no connection at the fuse box. If it was the parking light then this might be back fed from the licence plate lamp which is second from bottom.
5) If headlamps stay on then that is a back feed of the relay. This can be caused if the output side of lower fuses labelled 3 and 4 are connected together. (white/yellow, yellow) They should not be.
There's a run down of the fuses on this thread:
http://forums.pelicanparts.com/porsche-911-technical-forum/732349-911-fuse-panel-question.html