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dgcarousel's avatar
dgcarousel
Explorer
May 29, 2013

unable to use headlights without draining battery

This has happened twice to us. while driving we loose headlights windshield wiper etc. The first time we chalked it up heavy rains and possibly a short with the headlights. We have a 1981 Tioga c cla...
MEXICOWANDERER's avatar
MEXICOWANDERER
Explorer
May 30, 2013
NYET )

Voltmeter. At the isolator (the type with fins and three studs)

Start engine BE CAREFUL. Select VOLTS

Touch Positive test lead to CENTER stud on isolator

Touch NEGATIVE test lead to EACH outer studs. Scrape through corrosion

Do you read voltage higher than 1.1 volts on ANY of the two studs check?

If YES the isolator is BAD. Scrap it.

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