Wiring constant power to PCM?
Thread Starter
On The Tree
Joined: Mar 2006
Posts: 112
Likes: 0
From: Dallas, TX
Wiring constant power to PCM? I have searched and can't find anyone else doing this. I have a battery shutoff (negative) on my truck for safety and security. Since I don't drive daily, I shut the battery off during the week but want to maintain power to the PCM. From the pin outs I see an orange wire at Pin 20 and 57 - Battery Positive Voltage on the blue connector.
Do I splice into these two orange wires and run directly to the battery positive terminal?
Even tho I'm cutting off ground with the battery cutoff, is the PCM still grounded thru the harness ground?
Thank you very much.
Do I splice into these two orange wires and run directly to the battery positive terminal?
Even tho I'm cutting off ground with the battery cutoff, is the PCM still grounded thru the harness ground?
Thank you very much.
Teching In
Joined: Jan 2020
Posts: 4
Likes: 1
From: Pennsylvania
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Which pin should i connect constant power to in hopes of keeping pcm memory with battery disconnect hooked up. I spliced into pin 20 and 57 and put a fuse in-line but it blows the fuse every time the ignition switch is turned with the disconnect off. Any ideas?
Which pin should i connect constant power to in hopes of keeping pcm memory with battery disconnect hooked up. I spliced into pin 20 and 57 and put a fuse in-line but it blows the fuse every time the ignition switch is turned with the disconnect off. Any ideas?
