jeff spahn

I have my new H4 lights from Roger. I have the 80/100 kit from Roger which has the H4 connector on it. My new H4 lights have a slightly different cap which holds in the bulb.

The bottom connector appears to be a ground or something and it doesn't connect to the bulb nor have a connection on the plug to the bulb.

Do I just file this down a hair so I can put on the H4 connector from the kit (seems to be in the way by about 1mm)?

In the photo below, the offending connector on the lamp is the on in the 12 o'clock position on the light. It is the odd man out vertical male tine. (photo is upside down for some reason). In the real world this connector is at 6 o'clock on the light. It has no corresponding area on the plug.

Alan

Most H4 connectors fit without changes with this on the outside.... You can cut it off/file it down if you like - it doesn't connect to anything in this case anyway.

Alan

jeff spahn

Thanks Alan. I'll do that

jcorenman

That extra connection is used for a parking-light bulb, in other applications. For the 928 H4's it is unused, so you can either whack off that terminal or modify the connector. Most H4 connectors that I have seen have a recess in that area.

Cheers, Jim

The Forgotten On

In the 928 it was used in some countries like the UK when they required some form of a running light to be on when driving the car.

It isn't used in our application though so you could cut it off if you wanted to.

Alan

I don't think so..?

This is a generic Bosch part used on many H4 types - some with additional integrated marker lights used on other vehicles.

I've not seen any application with this on a 928. There are always other marker (running) lights that are on whenever the headlamps are on (including additional amber markers in the foglights for ROW cars).

Some UK cars do have special headlight configurations with Dim/Dip features (headlights on at reduced intensity while markers only are on) during several years when it was mandated - however this did not affect the lampholders, only the electrical system. This ran the standard headlight low beam bulbs at reduced intensity while in this mode.

Alan

The Forgotten On

That last part was what I was talking about Alan, I guess the part that controlled that function doesn't hook up to the fourth connection. Thanks for clarifying.

Hilton

The Dim/dip works by running the low-beams on reduced voltage.