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Starter signal wire


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#1 cheesey

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Posted 10 October 2019 - 08:34 PM

Iím in the process of re-wiring the car and Iíve been trying to pinpoint the location of the starter control wire. Does it come off the body harness or the ecu harness? In the manual it shows a red blue wire connecting to yellow black and then going to the starter. Anyone happen to have pics of what it looks like? Thanks in advance for the help.





#2 Turbo Cary

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Posted 11 October 2019 - 05:21 AM

I'm pretty sure when I redid my harness that it came off of the ECU harness.

#3 scott87star

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Posted 11 October 2019 - 08:21 PM

ECU harness, it gets picked up by the relay cluster next to the battery and runs to the starter in the ECU harness.
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#4 cheesey

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Posted 13 October 2019 - 04:48 PM

Ok got it now. It doesn't tie into it but its bundled in for a foot or two off of A-31. A little weird they did it that way. Thanks for the help.

#5 vbrad511

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Posted 17 October 2019 - 08:58 PM

 scott87star, on 11 October 2019 - 08:21 PM, said:

ECU harness, it gets picked up by the relay cluster next to the battery and runs to the starter in the ECU harness.

I need to hijack for a minute. Is there an actual relay for the starter? My 88's always been touchy about activating the starter. I've swapped starters, main relays, even ignition switches, and it's always. If the battery's fresh off the charger it'll go first try. If not, it'll take hitting the key several times. If it's been sitting a while it may not go at all. Can you post a pic of the relay or the cluster? I'll swap them all.

#6 88whitestarion

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Posted 02 December 2019 - 03:30 PM

I have this problem, too. Occasionally, I will have to turn the key several times before it engages the starter. I tried a new starter and it hasn't helped. I haven't check the wiring diagram, but I assume the solenoid is the relay. So, maybe our ignition switches are just wearing out. Anyone else had this problem and solved it?

Thanks,

Dave

Edited by 88whitestarion, 02 December 2019 - 03:31 PM.


#7 Turbo Cary

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Posted 05 December 2019 - 08:29 PM

 88whitestarion, on 02 December 2019 - 03:30 PM, said:

I have this problem, too. Occasionally, I will have to turn the key several times before it engages the starter. I tried a new starter and it hasn't helped. I haven't check the wiring diagram, but I assume the solenoid is the relay. So, maybe our ignition switches are just wearing out. Anyone else had this problem and solved it?

Thanks,

Dave

Your spade connector and wire at the starter is probably corroded or loose. I fixed mine by going further up the harness and running a new wire, then soldered and heat shrink the spade connector. I used a bare spade so I could make sure where the wire crimps could be soldered. Then I put a larger heat shrink around the outside of the spade to protect it from grounding out.

Another issue is the starter solenoid itself. Remove the starter. Clean the housing, remove the solenoid from the housing and clean the solenoid up with a soft copper brush. Then reinstall the solenoid. I cannot stress this enough, USE LOCTITE ON THE SOLENOID MOUNTING BOLTS! I didnt the first time and the vibration made the bolts come out.

Start with the spade repair then if that doesnt cure it clean the solenoid and starter.




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