God I love Holdens ..... My VSS issues are fixed (or will be shortly) and it cost me nothing, zip , zero , nadda
This is the back of the Factory VL Calais Holden Dash
Notice the size of the block on the back of the speedo head. underneath is an optical sensor pickup for the cruise control system and feeding to the factory ECU .......
Notice pins 6/7/8 = o/put 2 pulse
hmmmm this sounds very familiar. lets check my vl wiring diagrams, hmmm. pin 7 goes to cruise control module.
I have 2 spare 2 pulse output pins. I woner where I should feed one of them ....
hmmm pin 8 wire colour is brown/yellow trace, this is the same as pin a10 on the VN ECU .....
OMG .... problem fixed
Im so smart
and happy and have saved myself $200 (not that i will tell the wife of course)