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Username Post: Holley HP TBI wiring question        (Topic#278130)
5Larry7 
"11th Year" Silver Supporting Member
Posts: 1753
5Larry7
Loc: Dallas, TX
Reg: 05-17-04
03-16-12 09:48 PM - Post#2203647    

I am wiring up my Holley HP TBI. Looking at the loose leads in the schematic, am I correct that since I am using a MSD 6AL ignition, the yellow wire is not used? Also,m the white wire is listed as going to the points output. Is that the same as conneting it to the wire from the tach output on the MSD?

Thanks.
'57 210, Blown 327 cid, Holley HP TBI, 700R4, A/C
'51 Studebaker Starlite coupe, 350, TH400, GV OD.
'96 Replica of a 1950's Teardrop Trailer.


 
Danny Cabral 
Member
Posts: 3408
Danny Cabral
Loc: Ellington, CT
Reg: 11-03-04
03-17-12 02:10 AM - Post#2203669    
    In response to 5Larry7

  • 5Larry7 Said:
Looking at the loose leads in the schematic, am I correct that since I am using a MSD 6AL ignition, the yellow wire is not used?


Correct do not use the yellow wire with a CD ignition box.


  • Quote:
Also, the white wire is listed as going to the points output. Is that the same as connecting it to the wire from the tach output on the MSD?


The CD ignition box is either triggered by the violet (+) & green (-) magnetic pickup wires or
the white wire (crank trigger, Hall-Effect distributor or GM HEI computer controlled distributor).
http://www.holley.com/data/TechService/Tech nical/1... (Find your wiring application in Chapter 8.)
May God's Grace Bless You

'78 BRONCO: 508" stroker, TFS heads, Dominator MPFI & DIS, A/C, Lentech Strip Terminator AOD, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, 4" lift, 35" tires


 
5Larry7 
"11th Year" Silver Supporting Member
Posts: 1753
5Larry7
Loc: Dallas, TX
Reg: 05-17-04
03-17-12 03:51 PM - Post#2203867    
    In response to Danny Cabral

Thanks Danny. I have to admit, I am still a bit confused, I have a GM small cap HEI distributor and I purchased the harness, (p/n 558-304), from Holley. I see from the wiring diagram the 558-304 harness has 2 wires. The white wire goes to the white wire on the MSD and the pink wire goes to switched 12V. There is also a white wire in the main harmess "loose leads" that the large wiring diagram says to hook it to the "points output". That is the wire I am not sure about where to connect it to. Thanks again.
'57 210, Blown 327 cid, Holley HP TBI, 700R4, A/C
'51 Studebaker Starlite coupe, 350, TH400, GV OD.
'96 Replica of a 1950's Teardrop Trailer.


 
Danny Cabral 
Member
Posts: 3408
Danny Cabral
Loc: Ellington, CT
Reg: 11-03-04
03-17-12 07:33 PM - Post#2203961    
    In response to Danny Cabral

  • Danny Cabral Said:
The CD ignition box is either triggered by the violet (+) & green (-) magnetic pickup wires or
the white wire (crank trigger, Hall-Effect distributor or GM HEI computer controlled distributor).


Oops, the loose white wire isn't used with the GM HEI computer-controlled distributor.
Sorry for the confusion. Just follow the wiring diagram - Figure #4 on page 12.
May God's Grace Bless You

'78 BRONCO: 508" stroker, TFS heads, Dominator MPFI & DIS, A/C, Lentech Strip Terminator AOD, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, 4" lift, 35" tires


 
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