1971 D100
My dash is missing the brake warning light bulb so I'm wondering which bulb number to use. The other bulbs look like a #53 but they all have one wire going to them whereas the brake warning light has two.
Maybe it's the same bulb but just the ground side of the circuit is completed by the parking brake being applied?
Dash - Brake Warning Light Bulb?
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- Sweptline.ORG Member
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- City: Spokane
- State: WA
Re: Dash - Brake Warning Light Bulb?
That light doesn't come on when the parking brake is engaged. It only comes on when there is a failure in the front or rear brake systems. There is a block that is often mistaken for a proportioning valve but it's real purpose is to detect uneven pressure in the front/rear brake systems. It comes on when you start the engine as a bulb test.
1969 Adventurer W100
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- Sweptline.ORG Member
- Posts: 13
- Joined: Fri May 07, 2010 11:06 am
- City: Spokane
- State: WA
Re: Dash - Brake Warning Light Bulb?
Thanks, but a bulb number?
Re: Dash - Brake Warning Light Bulb?
I only have listing for '69,which calls for a #57 bulb.
Re: Dash - Brake Warning Light Bulb?
You've got it almost right. That switch to detect brake line pressure imbalance grounds the sending wire when there's a fault.FastbackJon wrote:1971 D100
My dash is missing the brake warning light bulb so I'm wondering which bulb number to use. The other bulbs look like a #53 but they all have one wire going to them whereas the brake warning light has two.
Maybe it's the same bulb but just the ground side of the circuit is completed by the parking brake being applied?
'65 W-100
'67 D-200
assorted non-mopar junk
smile..... It confuses the hell out of your enemies!
'67 D-200
assorted non-mopar junk
smile..... It confuses the hell out of your enemies!