71 bus mechanical dizzy wiring

laroche21 · Posted: Wed Jan 27, 2010 4:10 pm Post subject: 71 bus mechanical dizzy wiring

i recently purchased a mechanical advance dizzy for my 71. it has a red and black wire coming off of it. what is the correct way to wire the dizzy and coil?

VDubTech · Posted: Wed Jan 27, 2010 4:14 pm Post subject:

Red to positive, black to negative.
_________________
First Trip in the RustyBus:
http://www.thesamba.com/vw/forum/viewtopic.php?t=279077&highlight=

laroche21 · Posted: Wed Jan 27, 2010 4:20 pm Post subject: coil wiring

what wires should be hooked up to each side of the coil besides the dizzy wire. on my 71 bus stock everything

Emeritusx · Posted: Wed Jan 27, 2010 4:21 pm Post subject:

What he said.... Red to the hot side of your coil, black to the other side of the coil..
_________________
82 Westy ☢, 66 Splitty ☮, 73 Type 181 ✠

keifernet · Posted: Wed Jan 27, 2010 4:45 pm Post subject:

germansupplyscott · Posted: Wed Jan 27, 2010 4:50 pm Post subject:

if you have a pertronix or similar points replacement (you do if you have re/black wires exiting the distributor) the red is terminal 15 of the coil (which is the + terminal), black is terminal 1 (-). the coil terminals should be marked with these designations.
_________________
SL

VDubTech · Posted: Wed Jan 27, 2010 5:05 pm Post subject:

keifernet · Posted: Wed Jan 27, 2010 6:24 pm Post subject:

Desertbusman · Posted: Wed Jan 27, 2010 9:50 pm Post subject: Re: coil wiring

laroche21 · Posted: Fri Jan 29, 2010 11:01 am Post subject: thank you

thanks all for help... i will post the outcome

laroche21 · Posted: Mon Feb 08, 2010 3:39 pm Post subject: still no spark

so i have the wiring correct now and still no spark. i replaced the electronic ignition module with a new one from empi, due to the wiring backwards the first time. still no spark. the dizzy does spin when engine is turned over. the positive side of the coil also get power when ignition is switched on. any thoughts?

RocketRod · Posted: Mon Feb 08, 2010 4:54 pm Post subject:

From a Compufire VW-1 instruction booklet.

TROUBLE SHOOTING
DO NOT check to see if system is firing by disconnecting a spark plug wire and holding it next to ground. The high voltage created by this procedure stresses the insulation at the coil AND IS DANGEROUS!

NO SPARK
?? Check to see that there is 12 volts present at the wire from the ignition switch (coil +) when the ignition switch is on.
?? Verify that the RED and BLACK wires to the coil are crimped properly and attached to the correct coil terminals (Fig.# 3).
?? With the ignition switch off, remove the distributor cap and check the air gap between the Compu-Fire module and rotor. The gap should be approximately .060". The gap must be between .030" and .100".

IGNITION MODULE TEST - Note: Do not turn the ignition switch on during this test and leave it on. Only turn it on long enough to observe the test light.

Disconnect the tach lead from the negative (-) coil terminal if applicable. Connect a 12V test light from the coil negative (-) terminal to engine ground. With the transmission in neutral and the emergency brake set turn the ignition switch on. The light should glow. If it does, the coil primary is OK and the ignition switch is wired properly. If it does not, move the test light to the coil positive (+) terminal. If it glows, the coil is defective. If it does not glow, check the wiring to the ignition switch etc.. With voltage on both sides of the coil with the ignition switch on reconnect the test light to the coil negative (-) terminal. Now crank the engine while observing the light. It should flash on and off as the engine rotates. If it flashes and there is still no spark at the plugs check the coil and plug
2 wires. If it does not flash and the trigger rotor is located properly the module could have been damaged by connecting the RED and BLACK wires improperly.

HTH
_________________
Why Yes it is a Magic bus!
Common Sense isn't so common.

laroche21 · Posted: Wed Feb 10, 2010 10:29 am Post subject: still no spark

okay, i have power to both sides of coil. when turned over the test light on negative side of coil only does a dim flickering. is that what is supposed to happen?

laroche21

in addition to my last post, my buddy loaned me a vacum advance points style dizzy. the engine fired but backfired and died. i timed the vehicle according to a post on an older thread. my crankshaft pully has no tdc marks. if any one can provide me with a link of help on cylinder numbers and correct tdc location.

keifernet

Desertbusman · Posted: Wed Feb 10, 2010 2:54 pm Post subject:

Doesn't matter if your pulley has marks or not since you wouldn't know what the marks are. And particularly you wouldn't know with enough accuracy to do any timing. Read this topic http://www.thesamba.com/vw/forum/viewtopic.php?t=251672
particularly the last post. Don't waste time with the pencil in the #1 plug hole method. All that does is tell you if your are somewhere near TDC or at BDC.
What cylinders where? Your cylinder head tins have the cylinder numbers on them. Firing order? It is on the generator pedestal.
_________________
71 Superbug
71 Westy

laroche21 · Posted: Wed Feb 10, 2010 4:07 pm Post subject: thanks to all

thanks to all for help. the bus runs like a champion!

busdaddy · Posted: Wed Feb 10, 2010 5:35 pm Post subject: Re: thanks to all


Hello! Log in or Register \| Help \| Donate \| Buy Shirts	See all banner ads \| Advertise on TheSamba.com

	Forum Index -> Bay Window Bus	All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1