Alan

True - It will cause the high beam indicator to stay lluminated continually but it should have no effect on the driving lights - they should still work as expected since they are independant from the relay beam switching, (driven directly by the switch).

A diode can work (but drops some voltage & some HIDs are very voltage sensitive to inititially sustain), or a diode & relay or at the HL relay you can swap the 56b output to the 56 output of the late style ('87+) HL relay to utilize a single wire that stays on under high & low beam regardless of switching on the driving lamps.

One other thing to note is that if the low beam wire stays active during highbeam mode (due to any changes you make for this) - then the normal (USA only) foglight disable during highbeam is defeated and you can have all 3 active at the same time (fog + driving + headlamps) - as is already the case on ROW/Euro cars

Alan

Bill51sdr

I left the high beam wires unconnected/capped off & had a constant high-beam light on the dash (how appropriate ). My thought on this was that it was the car's way of telling me the high-beam elements were open. Not likely, but just a thought.

Alan

Thats interesting... the dash connector goes directly to those high beam wires. Normally with the switch off and either bulb connected the wires are 'grounded' through the inactive filaments. So from what you see maybe the dash has a pull-up resistor on that input and without either filament in place sees that input 'active'...

A test would be to remove both high beam fuses on other cars and see if they do this too...? I would expect this is digi-dash specific function (in the analog dash I'd expect this is just a bulb to ground).

A solution would be to add a resistor to ground on one of the high beam wires - probably ~100 ohms (5W) would do it.

Alan

JPTL

I bought a 'plug & play' single beam H4/9004 HID kit under the premise that the H3 Silverstars in the high beam bumper fixtures were more than sufficient for high beam driving. I'd do without high beams in the headlights.
Since I confirmed proper fit of the bulb at the headlight fixture my thought was that I could simply tap the ballast into the 12v females at the socket so long as they had constant power during low beam or high beam operation; & so long as I connected the ballasts using the correct polarity.
Problem is, my digital meter tells me that the polarity reverses when I switch from low to high or vice versa (as in the pics below).
Does this make sense?
I assume that although bulbs don't care about polarity, ballasts do.
Is there a way to jumper the neg & pos ballast power leads into the H4 socket; do I need some kind of converter; a relay; or least preferrably, rewire my stock headlight leads?
Dave & Alan, it looks like you guys have successfully jumpered high/low leads to allow single beam HID hookup:
..how would that be done? Am I trying to do something different here?

The pics below obviously aren't 928 sockets, the wiring is color coded for ease of explanation...

DR

Sounds like you are "backfeeding" the headlight Relay causing all sorts of issues.

This is why we modified our Kits specially for a 928 using these (see pic below) and also referenced in prior threads posted here and shown in Ed's Install Write-up. Simple install, just cut the High beam power wire, strip ends an crimp in the special Diode waterproof housings (crimps are built in).

If you need a couple give us a call/email and verify current address.

JPTL

Email sent to info@928gt.com

Thanks, David!

DR

Hi JP,

I very much enjoyed the "few" minutes I got to chat with you on the phone!!





Diodes on the way, see ya in person at the Frenzy, if not SOONER!