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Discussion Starter · #1 ·
034 1C questions:
How can you tell the difference between a 1A, 1B an 1C? is there any difference on the circuit board?
Also, there is a transistor in the "Q8" position that has it's legs cut off and what looks like a brand or burned hole in it to disable it... what does/did it do??
What is "J7" and the multi jumper "J4" for?? It looks like J2 and 3 are for hall or VR input.
BTW, this is on a "REV[A]" board.

Thanks!
 

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Discussion Starter · #3 ·
Rocco16V said:
How can you tell the difference between a 1A, 1B an 1C? is there any difference on the circuit board?
usually it's inscribed into the bottom of the wire connector socket
Hmmm... didn't know it was there.....It's hard to read, it has a number that's scratched out (1810?) then a "2" then what looks like "C4" then "C" and finally "VR"
 

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DDG said:
Rocco16V said:
1C set to VR
So I can't use the hall sender as a tach source? or it just requires a change in the jumpers?
No, only as a cam sync, a multi-tooth indexed wheel on the crank must be used for the C level firmwares.
 
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