Brake fluid level (electrical)

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Sep 17, 2012 | 11:04 PM

puttster

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From: Houston

Brake fluid level (electrical)

I installed a master cylinder from a 1988 Bronco II on my 1965 Ford. Worked out okay and now I would like to wire the fluid level sensor to a warning light in the cabin. I see though that it takes a three spade connector. Assuming I can find a connector, which wires should I use to light the light when fluid is low?

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Puttster

Sep 19, 2012 | 07:23 PM

pawpaw

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From: SW Va

Maybe remove some fluid so the level is low, then measure across & find the two leads that show continuity & those will be the two to use.

Sep 19, 2012 | 09:54 PM

puttster

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From: Houston

I can do that. On these MC's, how much does the fluid have to go down before the light goes on?

puttster

Sep 19, 2012 | 11:40 PM

pawpaw

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From: SW Va

I don't know.

Jul 26, 2013 | 10:46 AM

puttster

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From: Houston

Harder finding the three spade connector to the master cylinder than I thought. Maybe you have to buy the whole wiring harness

I will hit the junk yards and if I find one, cut it off. What other vehicles can I look for, besides an 88 B2, that use the same low brake fluid sensor?

puttster

Jul 27, 2013 | 07:30 PM

pawpaw

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So did the reservoir low fluid level switch check out ok, but you found that the harness electrical connector, or wiring was bad????

Jan 24, 2014 | 11:55 AM

puttster

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From: Houston

Sorry to be so long getting back to you pawpaw. I hit a yard and of about 150 fords maybe ten had a three spade connector like mine. IIRC I couldn't figure out how to unsnap the connector so I had to pry the whole reservoir off. Paid $5 for the part plus the $2 to get into the yard.

I did what you said, lowered the fluid level till I found the leads that lit up. Wired it up to my warning light and it works fine. Well, I guess it does