Alan

Rob,
15A fuses in the headlight circuit should be quite unnecessary if you are running stock 55/60W bulbs - the 7.5A should work fine in this case. If you have higher wattage - up to 100W - you can use stock wiring with 10A fuses (but make sure everything is clean & dry).

I would never use 15A fuses on this wiring - its not spec'd for it and sounds like you aren't using big bulbs anyway. Do you really have issues with 7.5A fuses blowing? you should find out why... at worst use 10A fuses.

BTW older wiring => less power due to increased resistance & decreased current handling capability due to largely the same things - less remaining conductor areas in wiring and in contact mating surfaces.

It's almost always a bad idea to add bigger fuses... unless you know why you need them and have verified the wiring is good for it. The headlight wiring on 928's is actually pretty skinny and quite long... For anything > 100W bulbs I recommend local relays at the headlights.

Alan

MGW-Fla

I do what I can, glad it was of some good to someone!

928SS

interesting point alan - didn't try 10's, but I did see some 15's for other stuff w/the same gauge wire, so I just tried'em and all seems fine after lots of night driving. according to DR, it's normal to use larger fuses w/the euro/H4 setups and my 7.5's blew pretty fast after the conversion, but were fine beforehand - so I ***-u-ME'd the extra load was the reason vs other issues. but my euro driving lights are on the same circut as the high beams now too, so that may be the reason. (iirc, euro light setups/switches are a bit different than US spec stuff for the driving/fog lights/but I'm just using the US switch so it activates the fog lights at low beam, and the driving lights just come on w/high beams - perhaps a dual mode switch would split up the driving/high beams and lower amp fuses would be fine...

fwiw, they don't seem to be warming up/most of my harnesses are new now (were very ugly parts!), and the lights are amazingly bright for non-hid stuff. I suppose I should try 10's someday just to insure a better margin, but losing lights at night on a dark road is kinda scary stuff for me... maybe I'll just do 1 for a while. hmmm...

didn't mean to sound happy cause you've got the headache mel!! but the scary/ugly parts are amazing, and the extra info that comes out along the way is a good thing for jokers like me who may be closer to having the same thing happen than we realize

hope ya get it resolved soon and thx for sharing!!!