LED Headlights: Turning on the fogs turns on the high beams, too!, New behavior, fogs worked normally until LED headlights installed. Options

[Spoke]

The white/blue wire to the foglight relay is cut and crimped to about 1 foot of wire. The other end of the wire has a ring terminal crimped on.

[Spoke]

The other end of the new wire is grounded on this lug. Now the foglights are independent of the high beams. With this modification , a ballast resistor will not be necessary when the headlights are LEDs.

[Mikey914]

This would actually be the preferred method of install as the resistors will generate heat.

Thanks Spoke

[Mikey914]

The load resistor needs to be on the low beam, to trigger the relay.

Mark, I purchased the resistor from you, but am still waiting on a final wiring diagram so I know where and how to connect up. Scott said you might have that out soon?

More than happy to take it back, Spoke’s solution is preferable.
Mark

[drem914]

The load resistor needs to be on the low beam, to trigger the relay.

Mark, I purchased the resistor from you, but am still waiting on a final wiring diagram so I know where and how to connect up. Scott said you might have that out soon?

More than happy to take it back, Spoke’s solution is preferable.
Mark

Thank you, I'll bundle it up and send it back. It's stlll in the orignal bag you sent it in.

[Shredhead]

I wonder if this would solve the problem I have, which I really haven't tried to solve yet. Have new LED headlight bulbs. First time I tried them, High Beam, check, Low Beam, check. Can't recall if I tried the fogs, which are still incandescent (and I think one is out). Next time I tried, them, Highs worked fine, Lows... nada.

[Spoke]

I wonder if this would solve the problem I have, which I really haven't tried to solve yet. Have new LED headlight bulbs. First time I tried them, High Beam, check, Low Beam, check. Can't recall if I tried the fogs, which are still incandescent (and I think one is out). Next time I tried, them, Highs worked fine, Lows... nada.

When the lows didn't work, were the high beams still on or no lights at all?

Also was the foglight switch on or off?

[FlacaProductions]

Spoke/Mark/all - thanks for spending the time to get this sorted. I'm away from my new-to-me 2.0 but this is really going to help as upon initial inspection I found that the current H4 reflectors were deteriorated and I was wondering what route I should take - stay with H4's or go LED. I really wanted to go LED but not if there was going to be collateral "damage" - can't wait to get back to the midwest where the 914 is living so I can tackle this. oh - and placing an order for Spoke's LEDs and some rubber from 914 Rubber...great resource here!!

[FlacaProductions]

Should the line coming off the high/low beam relay just be capped off?

[bdstone914]

Should the line coming off the high/low beam relay just be capped off?

@FlacaProductions

No. The solution is to remove the blue/wite wire from the fuse panel and run directly to ground.

Pictures from @chi-town .

[bdstone914]

Spoke/Mark/all - thanks for spending the time to get this sorted. I'm away from my new-to-me 2.0 but this is really going to help as upon initial inspection I found that the current H4 reflectors were deteriorated and I was wondering what route I should take - stay with H4's or go LED. I really wanted to go LED but not if there was going to be collateral "damage" - can't wait to get back to the midwest where the 914 is living so I can tackle this. oh - and placing an order for Spoke's LEDs and some rubber from 914 Rubber...great resource here!!

If you dont have fog light there are no known malfunctions.
LEDS can have some strange affects on related systems.
Was told of a user installed LED backup bulb in a Chevy truck. Caused a trans error light. They pulled the teams and went thru it and no internal problems were found. Many newer cars need a canbus to avoid erroneous errors from being generated.
Bruce

[bdstone914]

I wonder if this would solve the problem I have, which I really haven't tried to solve yet. Have new LED headlight bulbs. First time I tried them, High Beam, check, Low Beam, check. Can't recall if I tried the fogs, which are still incandescent (and I think one is out). Next time I tried, them, Highs worked fine, Lows... nada.

@Shredhead
You may have a hi-low relay that is sticky.
Bruce

[FlacaProductions]

well now i'm confused and i've read this over and over.

which is correct?

A: the blue/wht line from the HIGH/LOW relay gets grounded
B: the blue/wht line from the FOG LIGHT relay gets grounded

[jcd914]

It is the white wire with the blue stripe from the fog light relay but as Bruce illustrates it is easier to get to it were it connects to the fuses. So pull the wire Bruce shows from the fuse panel and connect it to a ground. The fogs will then be completely separate from the high beams.

Jim

[Spoke]

well now i'm confused and i've read this over and over.

which is correct?

A: the blue/wht line from the HIGH/LOW relay gets grounded
B: the blue/wht line from the FOG LIGHT relay gets grounded

This would be the same wire except it appears it could be physically connected at a different point.

A: On my '71 the white/blue wire was physically connected to the high beam spade connector at the high/low relay.

B: In the car pictured by Chi-Town via Bruce, this white/blue wire is shown connected to the high beam fuse on the fuse panel. Maybe a later year car?

In either case, this is the same wire and should be removed from its current position (either cut at the connector if in A: or pulled from the fuse if in B: )

Make a pigtail of about 1 foot of wire with a ring connector on one side, and on the other side either:

A: Crimp the white/blue wire cut from the high/low beam connector.
B: Crimp a male spade on and connect to the white/blue wire pulled from the fuse. Put shrink-wrap on the spade connection as to not touch any of the 12V power in the fuse panel. I would not recommend taping this off as the tape may come off and short to any of the 12V power.

The ring connector side of the wire is then connected to a local chassis point.

[Shredhead]

I wonder if this would solve the problem I have, which I really haven't tried to solve yet. Have new LED headlight bulbs. First time I tried them, High Beam, check, Low Beam, check. Can't recall if I tried the fogs, which are still incandescent (and I think one is out). Next time I tried, them, Highs worked fine, Lows... nada.

@Shredhead
You may have a hi-low relay that is sticky.
Bruce

I was thinking that too. Going to try a new one.

[Shredhead]

I wonder if this would solve the problem I have, which I really haven't tried to solve yet. Have new LED headlight bulbs. First time I tried them, High Beam, check, Low Beam, check. Can't recall if I tried the fogs, which are still incandescent (and I think one is out). Next time I tried, them, Highs worked fine, Lows... nada.

When the lows didn't work, were the high beams still on or no lights at all?

Also was the foglight switch on or off?

Can't remember right now. Have to check. I'd like to have the fogs on the "honor system" anyhow.

[FlacaProductions]

Got it now. Crystal clear. Thanks tons.

[bdstone914]

Edit:
Looking closer at the 70-71 and 72-73 diagrams I see a difference on the fog light relay ground. Only the 72-73 shows the blue - white wire to the #1 fuse.
I need to get all year diagrams.

Wire diagrams show the blue-white wire is connected to the #1 use spade fot 1970-1973 cars.
I have not checked diagrams for 74-76 cars.
Chi-town shows a 73 harness.
My bet is that all years have the wire in the same location.
@spoke
@jeffbowlsby

[Spoke]

These images are from my Haynes 914 Owners Workshop Manual. It shows only the "Up to 1971, USA and except-USA" cars have the white/blue wire to the foglight connected directly to the wire spade connector on the high/low headlight relay. All other years show the white/blue wire connected to Fuse 1.

It shows basically 3 different drawings of 2 configurations:

1) "Up to 1971, USA and except-USA" White/Blue wire connected at High/Low Relay.

2) "1972, 1973, USA and except-USA" White/Blue wire connected to Fuse 1.

3) "1974, 1975, USA and except-USA" White/Blue wire connected to Fuse 1.


Here is "Up to 1971, USA and except-USA" White/Blue wire connected at High/Low Relay. Foglight relay is #53; Headlight switch is #27. Note wire on pin 85 on #53 foglight relay connecting directly to the spade on pin F on #27 high/low headlight relay.