 New-to-Me 74 1.8l_Where to start on electrical issues |
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| rcautox |
 Feb 26 2023, 07:59 PM
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#21
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Newbie  Group: Members Posts: 17 Joined: 12-October 20 From: Alaska Member No.: 24,758 Region Association: Pacific Northwest  |
I removed the male spade connector and tested each wire in the run position. The yellow/red stripe wire has no power, the yellow wire does at the location in the picture (under the pax seat).
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| Van B |
Feb 26 2023, 08:10 PM
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#22
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Senior Member Group: Members Posts: 1,621 Joined: 20-October 21 From: WR, GA Member No.: 26,011 Region Association: None 
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Yeah don’t forget they are plugged like that because they both used to plug into the relay. So if you disconnect them you’re not gonna have power at all
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| Dave_Darling |
Feb 26 2023, 09:25 PM
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#23
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914 Idiot Group: Members Posts: 15,161 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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The whole idea is that the yellow wire carries the power to the yellow/red wire. (Unless I've got those backwards.) If you unplug them, then one of them won't have power and that is completely expected.
When they are plugged together, do you get power at the other end of the yellow/red wire? That end is in the 14-pin connector on the front of the relay board in the engine bay. If you get it there, plug that connector back in and check on the 12-pin connector on the right side of the relay board. One of those pins gets a yellow wire as well; and with the front plugged in that should get powered when the key is in the "start" position. If that gets power, then plug the 12-pin connector back in and check the other end of the yellow wire, which should be at the starter. --DD |
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| rcautox |
Feb 28 2023, 12:44 PM
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#24
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Newbie Group: Members Posts: 17 Joined: 12-October 20 From: Alaska Member No.: 24,758 Region Association: Pacific Northwest |
Thank you for the help! I have power at pin 1 on the 14 pin connector and, with 14 pin connector plugged in, I have power at pin 6 (male end for the 12 pin connector) on the relay board. I plugged in the 12 pin connector back and found I do not have power at the yellow wire at the starter. I thought it is a straight shot from the yellow wire in the 12 pin connector to the starter? So I have a bad connection at the 12 pin connector or??
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| Dave_Darling |
Mar 1 2023, 08:38 PM
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#25
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914 Idiot Group: Members Posts: 15,161 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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Sounds like either a bad connection there, or maybe the wire from the connector to the starter is bad.
--DD |
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| rcautox |
Mar 3 2023, 01:06 PM
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#26
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Newbie Group: Members Posts: 17 Joined: 12-October 20 From: Alaska Member No.: 24,758 Region Association: Pacific Northwest |
I pulled the cover off the 12 pit connector, gently pushed on the #6 pin to make sure it had a good connection-success! The starter is now engaging. Next-fuel and spark….
Thanks for helping track this issue. |
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