Do Two Power Wires Run to the Dual Function Firestone Compressor Gauge
Updated 09/02/2025 | Published 08/09/2025
Question:
What are the 2 power wires connected too? I have seen where some forms show connect one to ground and one to the relay. I’ve seen others showing connected to a key on source and the relay. Can you help me out with this?
asked by: Clay M
0
Expert Reply:
Hey Clay, are you referring to two power wires that run to the gauge of the part # F2188? If so, one is for powering the compressor that runs to the switch and the other is for powering a backlight in the gauge so that you can see what it is reading when it's darker and the headlights of the vehicle are on.
expert reply by:
Jameson C
0
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Jameson C.
9/2/2025
Hey Clay, did the explanation about the power wires for the gauge help you sort things out? If you're still working on it, I'm here to assist further.