There are 7 wires from the control unit.All wires are connected except the blue wire with yellow stripe and the bike is not sparking.Can you help please as there is no sign of where the wire should connect to. The bike is a 1987 Yamaha dt50 mx Thank you Martin.

I can guide you on how to reconnect the ignition coil connector wires correctly on your 2007 Toyota Camry LE 2.4L. Each wire should be connected to the corresponding terminal on the ignition coil.
Here is a general guideline based on the standard wire color-coding for most vehicles:
1. Start by identifying the ignition coil and the connector wires that you need to reconnect.
2. Check the wires for any color-coding. Typically, the wires are color-coded as follows:
- Black or Black with a White stripe
- Yellow or Yellow with a Blue stripe
- Blue or Blue with a Yellow stripe
- Green or Green with a White stripe
Here is a potential wiring configuration (please verify with your vehicle manual or a professional):
- Black or Black with a White stripe wire connects to the negative terminal (-) on the ignition coil.
- Yellow or Yellow with a Blue stripe wire connects to the positive terminal (+) on the ignition coil.
- Blue or Blue with a Yellow stripe wire connects to another terminal on the ignition coil.
- Green or Green with a White stripe wire connects to a different terminal on the ignition coil.

If your wires have a different color scheme, consult a repair manual for your specific vehicle or reach out to a professional for assistance. When reconnecting the wires, ensure they are securely attached to the respective terminals to prevent any loose connections or electrical issues.

I think this helpful

https://www.modifiedlife.com/1996-chrysler-cirrus-radio-wiring-guide/

Unfortunately I have no access to any previous information you received from other experts, but I will tell you that without knowing which ceiling assembly/control box, thermostat etc., that you are using, the most I can do is tell you this.
Blue wire is for the compressor circuit.
Black wire is for high fan .
Yellow wire is not used, unless for heat pump circuit reversing valve.
Red wire is for low fan.
White is the common AC connection.
Green/yellow striped is for ground to chassis.

Removed the sheathing on the seven-wire harness coming out from under the tank,may have been a poor connection in black-wire connecting link in the alarm system wiring harness between the light-gray-with-blue-stripe wire and the black-with-orange/red stripe wires, which in turn was intermittently shutting off the igniter box and resulting in no spark and the bike not starting. Re fix this

Please see my tip at http://www.fixya.com/cars/r6223989-ignition_coil_doesn_t_spark . These are generic instructions--specific instructions are pasted below from Autozone.com. If you get stuck, please get back to me.

Use a test light to check for power to the coil on the black wire with a yellow stripe--see procedure below and other tests you can run. You will need a volt-ohm meter to run most of these tests.

The system used on 1990-95 Accords and 1989-95 fuel injected Preludes uses the distributor components to signal the engine computer. The ECU triggers the spark through the igniter unit and coil. This spark timing is controlled by the computer as an integrated function of the fuel management system. The distributor contains a crankshaft angle sensor and a No. 1 Cylinder Top Dead Center (TDC) sensor. Using these and other electrical inputs, the computer controls spark timing electrically.

1990-91 ACCORD
See Figure 6

1. Remove the distributor cap, rotor and shield.
2. Label and disconnect the 4 wires from the igniter unit.
3. Switch the ignition ON . Use a voltmeter to check for voltage between the black/yellow wire and ground. Battery voltage should be present. If the voltage is not present, check the black/yellow wire between the igniter and the ignition switch.
4. Check for voltage between the white/blue wire and ground. Battery voltage should be present with the ignition ON . If voltage is not present, check the white/blue wire from the igniter to the coil and test the ignition coil.
5. Turn the ignition OFF . Check for continuity in the yellow/green wire between the igniter and the ECU.

Fig. Fig. 6: Terminal identification on 1990-91 Accords

1. Check the blue wire for continuity between the tachometer and the igniter.
2. Check the resistance between the terminals which connect to the blue and white/yellow wires. It should be between 1,100-3,300 ohms. If not, the igniter must be replaced.

Coil test:
1990-91 ACCORD

See Figure 16

1. The ignition coil is contained within the distributor. With the ignition OFF , remove the distributor cap.
2. Remove the screws securing the black/yellow wire and white/blue wires from the terminals. The black/yellow wire is connected to the primary positive terminal and the white/blue wire is connected to the primary negative terminal.
3. Measure resistance between the terminals. Resistance should be between 0.6-0.8 ohms.
4. Measure the resistance between the primary positive terminal and the secondary terminal. Resistance should be 12,800-19,200 ohms.

Fig. Fig. 16: Coil terminal designation on 1990-91 Accords

1. All test conditions must be met. If any test condition is not satisfied, the coil must be replaced.

Head unit color code:

12V-Yellow
12V switched-Red
Ground-Black
Illumination or Dimmer-Orange/Orange w/white stripe
Blue-Power Antenna
Blue wwhite stripe-Amp turn on

Whites-FL speaker
Greys-FR speaker
Greens-RL speaker
Purples-RR speaker
(Black stripes negative)

If you have a female harness to connect to the veicle side you will pretty much color match. The only exception is that you may only have an amp turn on wire but only a power antenna on the vehicle. In this case you would connect blue w/white stripe wire from radio harness to the blue antenna wire on the vehicle side.

If you are doing a hardwire (factory plug has been cut off) you can obtain a wiring code for your vehicle at www.the12volt.com for most vehicles.

follow the lead to the coil and see iff the wires have comeon had the same problem the other day

I have this alarm / remote start / keyless entry system and I have the poorly translated installation manual. Everything in mine installed fine in my 2005 suzuki aerio (except the power locks as the manual is worthless in that area) but I have heard nothing but horror stories from others online since I installed it.

I don't recommend you install it but if you really are determined, here is what the manual says (or tried to say and I spent 4 hrs interpretting / correcting it:

8 wire harness:
-- The 4 wire connector connects to the 4 wires harness part of the 3 relays
-- The yellow connects to the yellow of the breaker relay yellow
-- yellow w/black stripe connects to the oil sensor on the motor (look for single wire connected to sensor and generally a heat shield wrap/weave, mine was blue)
-- orange connects to the brake switch on the brake pedal
-- the blue connects to the door switch /dome light trigger

12 wire harness:
-- 6 central locking wires orange, yellow, and white plus the same 3 with black stripe.. Unfortunately the manual is not clear as to where they connect. The next page of the manual shows diagrams but they mysteriously add a white stripe to all the colors and the white wires apparently become green. I suspect that orange is not likely used in most installations and for positive door lock types (the most popular), yellow goes to unlock and yellow w/ black stripe goes to lock signal and the 2 whites go to 12v+. This is only a guess so don't hold me to it.
-- black is grounded to frame
-- Red is 12v+
-- red w/ black stripe goes to power trunk release (if equipped)
-- The 2 browns go to the left and right turn signals
-- The pink goes to the alarm

Ignition switch connections
----------------------------------------
The breaker relay:
-- blue goes to the ACC ON wire
-- Cut the ignition wire and connect the 2 greens to each end
-- Yellow connects to the yellow of the 8 wire harness

The 3 relays:
-- 4 wire harness connects to the 4 wire connector of the 8 wire harness
-- the 3 reds connects to the 12v+ red of the ignition switch (or thru the firewall to the battery)
-- black connects to the ignition on the downstream side of the 2 greens of the breaker relay
-- white connects to ACC ON
-- blue connects to the starter

I hope this is what you wanted

1991 Ford Explorer XLT Radio and Speaker Wire Colors
Pulled out the stock radio and found two plugs on the back of it. One plug had 7 wires (Power, Dimmer, Amp etc.) and one had 8 (Speakers).
7 wire plug (I could see these wires immediately from the plug):
Car Radio Battery Constant 12v+ wire = Light Green w/ Yellow Stripe
Car Radio Ground Wire = Black
Car Radio Accessory Switched 12v+ wire = Yellow w/ Black Stripe
Car Radio Dimmer Wire = Light Blue w/ Red Stripe
Car Radio Illumination Wire = Orange w/ Black Stripe
?? Don't know ?? Red Wire (No power to wire Constant or Accessory)
Car Radio Amp Wire = Blue
8 Wire Plug (Wires were wrapped in a grey outer sleeve, had to cut sleeve to get to wires.):
Right Front:
White w/ Green Stripe (+)
Brown (no stripe) (-)
Right Rear:
Purple w/ White Stripe (+)
Light Blue (no stripe) (-)
Left Front:
Light Green (no stripe) (+)
White w/ Orange Stripe (-)
Left Rear:
Light Blue w/ Black Stripe (+)
Yellow (no stripe) (-)
Speaker Wires (found at the individual speakers in the doors)
Right Front:
White w/ Green Stripe (+)
Green w/ Orange Stripe (-)
Right Rear:
Orange w/ Red Stripe (+)
Black w/ White Stripe (-)
Left Front:
Orange w/ Green Stripe (+)
Blue w/ White Stripe (-)
Left Rear:
Red w/ Green Stripe (+)
Red w/ Blue Stripe (-)

Hope this helps. I spent hours looking for the correct color key and this one works for my '91 Explorer.