Built into the alternator.
It is built into the alternator.
It is built into the alternator It is all 1 unit. Replace alternator.
It should be built in the alternator. Ask auto parts.
It is located within the alternator.
A 1985 what?
The voltage regulator is defective. It may be internal or external to the alternator. Any auto parts store can provide this information. Have them check the alternator for output.
replace the voltage regulator
It's mounted to the firewall. It should say "Electronic" in larger letters and "Voltage Regulator" in smaller letters.
Inside alternator In 1985 Ford was still using the external regulator. It was solid state and could not be adjusted. It should be found under the hood on the passenger side inner fender or on the backside of the radiator support.
it is inside the alternator. If the voltage regulator goes bad you have to change the whole alternatorAnswerIn your 1986 Honda prelude the voltage regulator should be separate from the Alternator. It should be a small black square with a five wire connector if i remember right. It should be mounted on the passenger side strut bubble inside the engine bay. Between the battery and the strut bubble and between the under hood fuse box and the engine. It is held on by two 10mm bolts. I know that this is where the voltage regulator is on my 1985 Honda prelude with the 1.8l carbed engine and since the 84-87 were mostly the same it should be the same on yours.
I'm not positive about the GRAND Marquis, but the Marquis does have an external voltage regulator. Located on the passenger side wheel well. It's a slim silver box that simply plugs in. Easy replacement...........