need to install SES light
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Joined: Feb 2003
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From: TEXAS
Car: 1987 Monte Carlo SS
Engine: 5.7L TPI
Transmission: 4 spd auto
need to install SES light
I swapped a 350 TPI into my monte, but with all the wiring harness changes, I don't have a functional SES light so I can pull trouble codes.
Is there any way I can run a wire from the ECM to a bulb or something?
Is there any way I can run a wire from the ECM to a bulb or something?
Joined: Mar 2000
Posts: 1,692
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From: Corona
Car: 92 Form, 91 Z28, 89 GTA, 86 Z28
Engine: BP383 vortech, BP383, 5.7 TPI, LG4
Transmission: 4L60e, 700R4, 700R4..
Axle/Gears: 3.27, 2.73
should run a ignition switch keyed (power when key is on) wire to a 12 volt light and then to pin A5 (originally brown/white) of a '165 ECU (MAF computer, not MAP). Any parts store 12v lamp should work. Run a small fuse inline too just for fun (see what amperage the bulb says it uses on the box for the right fuse).
I'm not sure which pin to go to for a '730 (MAP, or speed density) ECU.
I'm not sure which pin to go to for a '730 (MAP, or speed density) ECU.
Thread Starter
Member
Joined: Feb 2003
Posts: 205
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From: TEXAS
Car: 1987 Monte Carlo SS
Engine: 5.7L TPI
Transmission: 4 spd auto
So the ECM pin completes the ground to display the light, instead of providing voltage?
I have a 730 ECM but I still have the repinning guides so I can figure out which is the corresponding pin.
I have a 730 ECM but I still have the repinning guides so I can figure out which is the corresponding pin.
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Joined: Jun 2001
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by Svelte_SS
So the ECM pin completes the ground to display the light, instead of providing voltage?
So the ECM pin completes the ground to display the light, instead of providing voltage?
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eightsixseven
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Dec 16, 2024 01:50 PM
