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Old 11-24-2021, 04:55 PM   #14
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cleanflametrap's Avatar
Join Date: Sep 2009
Location: near baltimore

So, may I assume this is your microsquirt injected '91 240 using the original overdrive harness and cluster? It just doesn't make sense to me that you can manually hold the clapper down on the relay to light up the arrow on the dash. The 3523804 I have is a Hella relay with an Elmos chip doing the alternate action logic. 87 and 87a are the same circuit, which would be bridged to switched battery with the clapper held down, activating the solenoid.

Best find that test light and check what you have on the relay terminals. Start with 15. If you have nothing there, check fuse 11. That's the only way I see you lighting that dash arrow by holding the clapper down.
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