Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI System Hardware & BigComm Software - Manual (Page 16)

Black with red
stripe wire from
BS3 harness
labeled “Fan (LS)”
Standard 40 Amp relay
text
te
xt
Battery
Ground
Battery
+
-
text
tex
t
Switched 12 Volt
Line
Ground
+ -
Relay
86
30
85
87
87a