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

18,800

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.

25,465

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

Add photo

Related Questions

Search Datsun 280Z Questions

Datsun 280Z Experts

#1 F_O_R
F_O_R
Reputation 150
#2 tennisshoes
tennisshoes
Reputation 120
#3 Andrew Olsen
Andrew Olsen
Reputation 90
View All

Related Models For Sale

Used Datsun 280ZX
17 listings
Used Chevrolet Corvette
147 Great Deals out of 20,685 listings starting at $3,995
Used Ford Mustang
537 Great Deals out of 45,845 listings starting at $1,999
Used Chevrolet Camaro
245 Great Deals out of 31,195 listings starting at $369
Used Toyota Celica
4 Great Deals out of 367 listings starting at $1,511
Used Porsche 911
91 Great Deals out of 4,513 listings starting at $10,500

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.