SAAC Forum

The Cars => 1967 Shelby GT350/500 => Topic started by: jdeboss302 on August 21, 2023, 02:54:04 PM

Title: Inboards not working
Post by: jdeboss302 on August 21, 2023, 02:54:04 PM
Haven't worked in a while, so I am getting ready to dig into these.

If I am not mistaken, don't they run off the dimmer switch on the floor?

Any common areas I can easily check 1st?
Fuses?
Bad wiring?

Thx
Title: Re: Inboards not working
Post by: Coralsnake on August 21, 2023, 03:22:26 PM
They are usually spliced right off the headlight harness.
Title: Re: Inboards not working
Post by: jdeboss302 on August 21, 2023, 03:29:21 PM
ok, great,
but they operate off the dimmer switch ?
no internal switch ?
Title: Re: Inboards not working
Post by: Coralsnake on August 21, 2023, 03:35:01 PM
Yes high beam switch on floor
Title: Re: Inboards not working
Post by: greekz on August 21, 2023, 03:40:56 PM
Here is a picture of mine.
Title: Re: Inboards not working
Post by: Bob Gaines on August 21, 2023, 05:00:23 PM
The white scotch-loc quick connectors can be a source for a bad connection . You can clean and redo /improve the connections without getting rid of the historic build technique that the white scotch-loc represents.
Title: Re: Inboards not working
Post by: jdeboss302 on August 21, 2023, 05:08:06 PM
Great,
Thank you everyone.
Title: Re: Inboards not working
Post by: capecodmustang.com on August 24, 2023, 01:54:17 PM
Joel...
When I owned #2188 they never worked...

I never drove it at night so it wasn't a big deal...
Title: Re: Inboards not working
Post by: JD on August 24, 2023, 04:25:29 PM
See this link to a thread on this, illustration in reply #3

https://www.saacforum.com/index.php?topic=18796.msg149700#msg149700

Also attached here...
Title: Re: Inboards not working
Post by: Bob Gaines on August 24, 2023, 06:07:02 PM
The easiest check is to start by using a multimeter or lest light seeing if you have power at the splice /factory headlight plug connection. If you have power there then you know it is the spice and if not then you know it is a problem from the splice on back.
Title: Re: Inboards not working
Post by: BryanT on August 25, 2023, 07:32:16 AM
Quote from: jdeboss302 on August 21, 2023, 02:54:04 PM
Haven't worked in a while, so I am getting ready to dig into these.

If I am not mistaken, don't they run off the dimmer switch on the floor?

Any common areas I can easily check 1st?
Fuses?
Bad wiring?

Thx
Does the high beams work in your outboard fender lighs.  This could help direct you to the switches or wiring.
Title: Re: Inboards not working
Post by: Cobrask8 on August 25, 2023, 09:08:08 AM
Check the ground connection. I bet the fault is there.
Title: Re: Inboards not working
Post by: JD on August 25, 2023, 09:35:29 AM
Quote from: capecodmustang.com on August 24, 2023, 01:54:17 PM
Joel...
When I owned #2188 they never worked...

I never drove it at night so it wasn't a big deal...

OK if Bret is referring to the same car then you might also check that the dimmer switch is working and the bulbs are good as well, are the fender high-beams working?  (all four lights should come on when the dimmer is switched on).  Might be the dimmer is bad or not connected into the system?