just put in a 82 Datsun ZX alternator in my 1975 280Z. Did the proper jumper wires to eliminate external voltage regulator. Car starts but volt meter reads on the negative side. Any suggestions?

Asked by Jul 25, 2015 at 12:31 PM about the 1975 Datsun 280Z

Question type: Maintenance & Repair

2 Answers

20,020

Check voltage with a hand held voltage tester if charging at 14 volts you have a bad gauge and if its not you have a bad alternator or that alternator that you installed is charging at the wrong voltage. Maybe be a different voltage alternator from the 82 Datsun for your 75 280Z.

27,535

IS IT ENERGIZING ?IS THERE A IDIOT LIGHT IN THE SYSTEM..The yellow wire is the Sense, or S, wire. It monitors voltage so that the internal regulator will work correctly. Without it connected, I think that the alternator might put put maximum voltage (once you get the L wire connected). It has power all the time.

Your Answer

Datsun 280Z Experts

  • #1
    F_O_R
    Reputation
    150
  • #2
    tennisshoes
    Reputation
    130
  • #3
    Andrew Olsen
    Reputation
    90
View All

Related Models For Sale

Used Datsun 260Z
3 listings
Used Datsun 280ZX
19 listings
Used Chevrolet Corvette
173 Great Deals out of 19,759 listings starting at $3,000
Used Chevrolet Camaro
446 Great Deals out of 30,846 listings starting at $1,450
Used Ford Mustang
594 Great Deals out of 36,389 listings starting at $899
Used Dodge Challenger
247 Great Deals out of 22,445 listings starting at $7,750

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.