Flasher Switch Gremlin

[wrcbonk]

Well as soon as I got my rb25 to run in my S30 a pretty bad electrical gremlin has reared its ugly head. I noticed when the car was running that the gages weren't reading. Also the turn signals and brake lights were out. We started trying to track things down and noticed the flasher wasn't working either and noticed the 20 amp flasher fuse was blown.

 

 

We (me and Rejracer) started unplugging things trying to isolate the bug. We were able to turn the key to On without blowing the flasher fuse, but then the stop 20 Amp Stop fuse blew. We looked at the FSW wiring diagram and started unplugging the following deviced to try to isolate the problem:

 

1) Hazard Switch

2) Blinker Switch

3) Stop Switch

4) Turn Signal Switch

5) Hazard Flasher

6) Rear Harness to Break Lights

7) Front Harness to Blinker Assy's

 

 

Came to the conclusion that one of the (non-ground) wires on the Dash loom must be grounding/grounded. So we unplugged the flasher switch and the battery and started looking for wires with no to low resistance (ohms). The FSM wiring diagram for a 1971 240z shows the Hazard Switch wired as follows: Ohms

1-G/W Flasher 0.L

2-GR Front TS 1.0-1.2

3-GB Front TS 26.2

4-G +12v 0.2

5-B Flasher 53.9

6-GY +12v 0.L

 

7-GY To stop switch 0.L

8-WB Brake TS 1.6-1.4

9-WR Brake TS 1.4-1.6

 

 

One problem I don't have a Black wire, I have two Green wires. So the results of 4 and 5 are either good or need to be switched. Assuming the low Ohm readings on 2, 4 or 5, 8 and 9 are a problem.

 

We wiggled the harness and weren't able to get anything to improve.

 

Let me know if anyone has had this kind of problem.

 

Bonk

[wrcbonk]

Fixed it. Had the turn signal flasher plugged into the door light switch (grounded).