new wiring harness no start

Discussion in 'Sparky's corner' started by jaye, Jan 26, 2017.

  1. jaye

    jaye Well-Known Member

    I just completed an aftermarket engine wiring harness; headlight harness not yet installed. When the key is turned the only thing that happens is the generator light comes on, the interior lights are all working. I have a red wire coming off the voltage regulator inside a black clip along with a green wire that comes out of the harness. I haven't had an opportunity to trouble shoot anything. below is the red&green wire in the clip its blurry though.

    wire.jpg
     
  2. moleary

    moleary GOD Bless America

    without any background here, or knowing the car you are working on, assuming you have power verified at the starter and solenoid....I will toss up if you sure the neutral safety switch is connected and adjusted properly on the column.
     
  3. CJay

    CJay Supercar owner Staff Member

    Did we wire the starter correctly? Verify the purple wire is on the S terminal and the yellow wire is on the R terminal. We're going to need a better picture of the wiring. The green wire is usually the temp sender wire
     
  4. jaye

    jaye Well-Known Member

    I just realized I posted this in the wrong section; the car is a 69 Buick Skylark 350/T350 w/AC. I plan on trouble shooting tomorrow when I get to work if I have some free time. I'm pretty sure the starter is wired correctly however, I'll check it tomorrow.
     
  5. CJay

    CJay Supercar owner Staff Member

    Ok, we'll be waiting with the schematic at the ready.
     
  6. jaye

    jaye Well-Known Member

    Could the moderator move this thread to the wiring section?
    I haven't had an opportunity to do any troubleshooting on the car due to the work load so it maybe a few days however, I did take some pics. The two clips I think go to the wiper however, when attached the wiper moto runs and doesn't shut off , I flipped the clip & the wiper motor worked then started to smoke before disconnecting. The green & red wire I don't know what attaches to it the black & white I assume is for the transmission solenoid. I brought the harness from oldbuicksparts. I also have HEI I already changed the pink resistor wire.
    22.jpg
     
  7. CJay

    CJay Supercar owner Staff Member

    This is an original AC car I assume? The black plastic connector with the green and red wire goes to the blower motor relay that should be on the firewall. There is a small harness that goes from that connector to the relay.

    The other wire looks like it may go down the transmission

    And put that distributor back to the front of the engine where its supposed to be!!!:spank::laugh:
     
  8. jaye

    jaye Well-Known Member

    Thanks Jason, is there a wiper motor jumper wire or is the wiper plugs directly to the wiper motor.
    I tried moving the distributor but "FREE" wouldn't pull :)
    Thanks you have been a great help hopefully I get under the dash to see if any wires are loose and figure out why its not starting.
    one more thing while facing the car the engine harness is on the left side of the bulk head plug this is correct right?
    Thanks again
    Jaye
     
  9. CJay

    CJay Supercar owner Staff Member

    Did you take the dash out of this car? There is no jumper for the wiper motor. Those connectors plug right into the wiper motor.

    Grab the part of the column that rotates and giggle it as you turn the key to the start position. Sometimes the neutral safety switch is slightly out of adjustment. If you giggle the column you might get some signs of life from the starter. If so we can adjust the switch

    And just humor me and check the wiring on the starter. The yellow wire should be on the outboard side of the starter. And the purple should be on the inboard terminal. Find the connector with the two purple wires on the neutral safety switch and disconnect it. One side of that connector, comes from the ignition switch. The other end goes to the solenoid. We need to see if the one of those purple wires gets hot (12v) when the key is turned to the "START" position. If it doesn't have 12v, then we need to go further upstream to the ignition switch

    So the way it works is this- you turn the key to "START". The lock cylinder is connected to a rod that moves the ignition switch at the base of the column. The ignition switch applies 12v to the purple wire coming out of the switch to the neutral safety switch. The neutral safety switch will send the 12v onto the starter as long as the car is in park or neutral. The neutral safety switch is a go/ no go switch. In park or neutral, there should be continuity through the switch. Once the 12v is allowed to continue through the neutral safety switch it hits the solenoid and the starter cranks.

    Its very easy to get intimidated by all those bundles of wiring in a car. But if you separate out just the circuit your working on, its really not that complicated
     
  10. jaye

    jaye Well-Known Member

    I also thought of the neutral safety switch; I'm sure the starter is wired correctly but want to get it on the lift to check it next week just to be certain, then I'll go through a lot of what you mentioned above. I probably want get to it until Tue or Wed those are my off days. Also since I have HEI do I still attach the yellow wire to the left side of starter?
    Thanks again
     
  11. jaye

    jaye Well-Known Member

    Went into the shop today and got the Skylark running, ran great after setting the timing & getting the carb adjusted. After it got to operating temp I noticed a lead in the water pump gasket & I have to adjust some lifters one busted along with a bent rod, so I was expecting to have to adjust one. Hopefully tomorrow I'll get another water pump gasket on and adjust the lifter , then next week I can put the fenders on and adjust the front sheet metal.
    Thanks for the help
    Jaye
     
  12. CJay

    CJay Supercar owner Staff Member

    Well??? What was the problem with the no start? Inquiring minds want to know!:pp
     
  13. jaye

    jaye Well-Known Member

    I don't know... I took the neutral safety switch wires off the steering columns, no start, then I tested the two purple wires on the steering column, tested light, then started; been starting ever since. Maybe the clips weren't fully seated on the barb or corroded. I checked for a short & found nothing, all wire still look new. I'm stumped...
     
  14. jaye

    jaye Well-Known Member

    Forgot to mention the issue the neutral safety switch was bad when it wouldn't start, if I move the neutral safety switch it would start up.
     

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