Standalone Harness - what to wire in
 

I am trying to determine what wires from a Gen III DBC standalone harness will come inside of the cab? VSS for the speedo as an example. I currently have my in-cab harness pulled and am rewiring it to a fuse block out of a 92' Blazer since my panel/harness was in rough shape. I am also hard wiring my cluster for the S10 speedo swap while I am in there.

I am trying to figure out what wires are needed to connect to a standalone harness (basically which come inside the cab from the standalone harness), I assume at least one +12V is needed no matter how "standalone" the harness is, fuel pump? etc. Thanks for any assistance.

Re: Standalone Harness - what to wire in
 

Tryin to decipher your question here.

From the stand alone harness to inside the truck, what wires do you need to come out?
If your standalone harness relay/fuse block is in the engine compartment you will need from the cab:
Constant 12V
Switched 12V
Another ground (you can't have too many)
Oil pressure gauge
Water temp gauge
AC control??

From the harness going into the cab:
VSS
Tach
Check engine light (will need a ground on the other end)
OBD2 connector
Torque converter lockup

Fuel pump/fan wires usually come from the harness fuse/relay block. So they will stay in the eng compartment and go from there.

I might be missing something, but those are the basics.

Bubba

Re: Standalone Harness - what to wire in
 

Perfect, thank so much.

Re: Standalone Harness - what to wire in
 

Just an fyi, the check engine light needs ignition power, not a ground.