1996 Pontiac Sunfire Logo

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Posted on Apr 01, 2017
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1996 Pontiac Sunfire starter wiring - has had the recall service done to add the starter relay. All of the wires were cut to the starter. Here is what I have so far: The battery wire goes to the large terminal on the sol. Another red wire from the alt goes to the large terminal on the sol with the battery. Then I have 2 red wires from the relay and a small black wire from the relay also. The purble wire from the relay is tied into the purple wire from the origional harness. The small black wire from the relay goes to 12V when cranking, so this goes to the S terminal on the sol. But, what are the other 2 red wires from the relay hooked to? Do they both go to Vbat also?

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Vernon Taylor

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  • Pontiac Master 7,446 Answers
  • Posted on Apr 01, 2017
 Vernon Taylor
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I am not familiar with the model or the modification. The relay is required to act as a switch to relieve the load on the igniton/starter switch and the stock wiring. The starter switch now switches on the relay instead of operating the starter directly.

The relay contains two parts - the switching contacts and the relay coil or electromagnet that when energised pulls the switching contacts together or apart depending on design.

For use as a starter relay a standard 4-pin relay would be suitable but a 5-pin could be used without detriment leaving one pin unused.

The wire from the ignition/starter switch will be used to energise the relay coil and therefore switch on the current flow to the solenoid. In order to energise it must be part of a circuit and so current must flow through the coil from the ignition/starter switch and then to ground - the thin black wire is traditionally the ground wire for the relay coil, but you will need to check this yourself.

In order to switch a good supply of current to the starter soleniod the relay switching contacts are connected, one to a battery supply and the other one to the soleniod S terminal. The battery supply could be from the battery or from the large stud terminal of the soleniod. If from the battery or other remote place best practice would be to ensure a suitable fuse is also included. While the relay coil ground wire is traditionally thin the battery supply and solenoid wires traditionally are fairly thick.

Sometimes a relay has a helpful circuit imprinted on the cover. Many relays can easily have the cover removed and once you see inside the way it works becomes failty obvious.

I hope this helps...

5 Related Answers

Anonymous

  • 625 Answers
  • Posted on May 28, 2008

SOURCE: O2 sensor wiring

ok the two white go to the two brown, the creame to the black and the grey to the purple,

if this don't work just swap the last two,
it will not damage any thing on your car, just if is not right it will turn the light on,
but the withe cables definly go to the brown they are only grownds

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Anonymous

  • 1 Answer
  • Posted on Feb 15, 2009

SOURCE: pontiac sunfire

I had that problem last year. I bought a new starter but it was not the correct one for my car. For the 98 there are two different starters. I bought the wrong one the first time. My step father started to put it one and realized it was not the same as the one he just pulled off. Ending up taking it with us when we returned the orginial one I bought. The orginial one I bought was about $70 the correct one was $400. The auto store did not have the correct one listed as a replacement part. Until the number off of the part was keyed into the system and found out that it was just not the common replacement part.

defadad

Harry Goodwin

  • 353 Answers
  • Posted on May 09, 2009

SOURCE: Starter wiring messed up need help

there should be a large battery cable red going to the large terminal of the solenoid, another thin wire going to the flat blade connector which should go to the starter switch, The way to test the wires to find out which one is the ignition switch wire is to get someone to sit in the car and turn the ignition key as if to start it and you can use a simple test light to see which one goes on and off as the ignition switch is turned on and off.
There should be another wire that connects to the same terminal as the battery cable which goes to the altenator, about twice the size as the small wire is. If there are any more wires I am not sure where they will go to.
Hope that works for you

Anonymous

  • 6982 Answers
  • Posted on May 24, 2009

SOURCE: STARTER MOTOR WIRING

The wires with the large loops go on the big terminal. The purple wire likely is the one with the smaller loop that goes on the right terminal (facing the solenoid). That is ith trigger wire from the ignition key.Do not permit the wires from either terminals to touch.

Anonymous

  • 8 Answers
  • Posted on Sep 21, 2009

SOURCE: We are replacing the fuel filter in a 98 pontiac

Assuming you mean replacing the fuel PUMP, the 2 wires are different guages. Connect the lighter wire to the lighter wire and the heavier wire to the heavier wire. If the new harness uses both the same size wires, the heavier wire on the vehicle side (solid black) is for the fuel pump ground. Lighter wire is for fuel guage sending unit.

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check ALL connections relating to the starter and please email me at [email protected] with any other info or questions
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