I put an aftermarket speedo in my 88 s-10 blazer. the speedo doesnt work. so does anyone know which wire in the ecu i need to use to hook the VSS {(vehcile speed sensor) too so that this badboy will work. Thanks for the help!

 

no ideas at all

 

Go to Autozone's website and click on the "Repair Info" heading. Then go to the "Intermediate" section. It is free, but you do have to create a username and password. Go to the "Chassis Electrical" section, and there you will find wiring diagrams for your particular vehicle. It really helped me out in diagnosing a speedo problem in my '91 S15 Jimmy.

 

I would like to know where you got the speedo from and how far do they go back in years?

 

@terry2707: we don't have any Autozone's up here in Ontario (that's where Brooklin is from) and i've tried to use their site before for things. it's a bigger PITA then it's worth. seems being outside of the States is a big issue for their site.


@ Brooklin: what speedo did you drop in? (just curious) when i had to replace the front outer half of the wiring harness in my Jimmy, it was the purple/green wire. (i had to rewire the VSS & reverse switch 'cause i only had an Automatic wiring harness available for it)

 

A10 Brown VSS input

Thats all the info I have for an 88+. Thats the number in the factory ECM harness and the color tho.