jclanin

Hi all,

I've read that I need to replace my brake light switches if the lights don't work. Mine work, but I have to apply quite a bit of pressure before they illuminate which seems wrong - and unsafe.

In an unrelated event/issue (i think), my driving lights don't work at all. I've checked the bulbs and fuse and they seem fine. I know these lights only work when the headlights are illuminated by design. Mine don't work at all.

Any ideas?

thanks,

JC

Amber Gramps

*droid. I've replace my switches 3 times in 4-1/2 years

Amber Gramps

....and check your grounds

jclanin

So it might still be the switches? I assumed if they were bad I would have no brake lights at all. If that's the case I'll order new switches today...

Where am I checking my grounds?

rgrimm

Just had the brake switches replaced last summer (the '84). Same symptoms as yours; brake lights would work, but only if you were standing on the pedal. Much better now.

Amber Gramps

come to think of it it may be more than a ground wire issue if they are all out.

The brake light switches I use are 201 1087

dshepp806

"driving lights"? Is this a modded circuit install?

Or, are we talking "fog" lamps? I make use of the fog lamps as "driving lights" and one only has to pull the light switch to the "parking" light position to engage the "fog" lamps (I think THIS is factory). Will have to look at your circuit, as to fusing and relays ,..then will report back....no Bentley, right now....

Did both go out at same time? Did they ever work?

BEST!

Doyle

jclanin

Hi Doyle,

Yes, fog lamps (i think of them as driving lights). They don't work at all and haven't since I've owned the car. I'm not really sure what to check since the fuse and bulbs are good...

thanks,

--JC

User 4221

I'm heading out right now but can post the schematic later to help you with the DL issue

g-50cab

Brake light switches are a common "issue" with the 3.2 carreras. I've replaced mine on the old car (a 1987) a few times...

Carrera3.2LG50

I did this myself a couple months ago and took some pics along the way. The key was obtaining a 22mm deep offset wrench - then it was easy peasy.

Maybe you'll find this helpful:

https://rennlist.com/forums/911-foru...e+light+switch

rusnak

Someone, maybe Draco? Was doing work on adjustable brake switches. He's got a brain like a parts database, and has a nose for cross referencing stuff like that.

Amber Gramps

Speaking of Draco......I have something for you to look at that Jim made me a couple years ago. Must not speak . . .

dshepp806

I take that factory comment back. I think I frikin' forgot this was modded, long ago. CLEARLY, pin #2 (Park) has no connection to the fog lamp switch. As you stated (factory), lights would have to be on for the switch to signal front fog lamp relay to engage.

12 VDC applied via blue/white wire to fog lamp relay FROM the fog lamp switch----The relay rx's a 12 VDC feed from the fuse box panel 1---...this voltage will be switched through the relay, delivering 12 VDC OUT of the relay on the WHITE/GREEN wire. This wire will hit the fuse box 2, fuse 8/16 amper....then on to the lamps.

This is from Bentley 970-70, '86-'89. I'd start with reseating that really, as the ground must be ok to function (G104)...Secondly, I'd clean the fuse block at the fog lamp fuse and place a fresh fuse in there...........have you a voltmeter?



Best!

Doyle


Have you

CT Mike

I've got a new, never opened Bentley manual I was going to put on eBay. If you want it for $50+ shipping 5? Let me know. They are good to have. Mike