Find out how to access AutoZone's Wiring Diagrams Repair Guide for GM S-Series Pick-ups and SUV's 1994-1999 . AutoZone's Repair Guides tell you what you need to know to do the job right.. S-10 often faces wiring challenges when installing aftermarket tachometers without factory tach wiring. For a 1998 S-10 4-cylinder without a factory tach, connect the green wire from the Sun tach to the negative (-) terminal of the ignition coil. This terminal sends the tach signal pulse needed for proper operation.
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The LS1 tach signal is interpreted properly by the 98-up S-truck gauges and the tachometer reads correctly A typical harness for the LT1 swap in a 94/95 S-10 ranges from $750-$795 LSx & Gen III Vortec harnesses are typically $850 . *Ask about our sensor package including MAF and O2 sensors for a complete matched system.. tachometer install Can anyone tell me where to connect the green wire from an aftermarket tach to on my 98 S10. I was also wondering what the redline is for a S10 4 cylinder. Thanks for the help.