T/S Module?

knattrass · Post by **knattrass** » Thu Mar 27, 2008 3:03 am

Chasing down the last of the wiring issues leaving no blinkers. Pulling the light switch and applying 24v to the pins shows all lights working properly. I have a new t/s module (black box with fins), Humvee style lever, and harness from Joe Cook. When you engage the t/s, some lights turn on but don't blink. We added a ground wire to the lever, connected to the ground on the module. Are these modules easy to burn out? Only thinking that as we chased the various issues, maybe a jolt went thru it?

N1VSM · Post by **N1VSM** » Thu Mar 27, 2008 7:03 am

Good idea making a firm ground at the lever. Sounds like a bad ground at the marker light bucket. Bad ground = strange behavior in these beasts. Try rigging up a temporary ground and see if that solves the problem.

MSeriesRebuild · Post by **MSeriesRebuild** » Thu Mar 27, 2008 8:59 am

Yes trouble shoot all issues 1st such as no ground, etc. The military solid state flashers are trouble prone. We never use them, but replace it with a 3 prong signal-stat #263 for a 12 volt system, #263-4 for a 24 volt system, results in much longer life without issues.

knattrass · Post by **knattrass** » Fri Mar 28, 2008 11:50 am

Charles - thank you very much for your help today. The brand new military turn signal relay was the cause of our problems. Using a signal stat flasher 3 prong fixed the problem. We would have never figured to use only the X and L tabs - not the P tab. Our bench test is now complete and fully operational. We plugged the new mil relay back in and the system did not work!! We will be sending that part back for a refund! We also noted that some of the lettering on Joe Cook' harness did not correspond to the pins - like L & K?? His wire numbers were correct. Thanks again!!

52m37Hal · Post by **52m37Hal** » Sat Mar 29, 2008 7:55 pm

Just so I am sure I am understanding this, you replaced the military electronic flasher unit with a signal-stat 24 v flashes and kept the mlitary turn signal switch, correct?

Please explain the wiring for the signal-stat flasher. I assume you cut off the connector for the electronic flasher wiring harness and connected to the flasher with quick disconnects. Which wires go to which terminals?
Thanks

MSeriesRebuild · Post by **MSeriesRebuild** » Sat Mar 29, 2008 8:13 pm

52m37Hal wrote:Just so I am sure I am understanding this, you replaced the military electronic flasher unit with a signal-stat 24 v flashes and kept the mlitary turn signal switch, correct?

Please explain the wiring for the signal-stat flasher. I assume you cut off the connector for the electronic flasher wiring harness and connected to the flasher with quick disconnects. Which wires go to which terminals?
Thanks

Wire"A" goes to the flasher terminal marked "X" or power input. Wire "B" goes to the flasher terminal marked "L" or load output. Only a 2 prong flasher is necessary for use with the military solid-state switch. A 3 prong flasher will also work, simply attach no wire to the flasher terminal marked "P" or pilot. The pilot lamp function on the military switch is activated internally, this function on a civilian switch is activated from the flasher, thus a 3 prong flasher is required if using a non-military switch. Any 24 volt heavy duty flasher will work, the newer electronic ones are better, the older mechanical flashers are ok, but don't last as long.

52m37Hal · Post by **52m37Hal** » Sat Mar 29, 2008 8:25 pm

Charles,
Thank you. What about the ground wire on the harness. Not needed?

knattrass · Post by **knattrass** » Sun Mar 30, 2008 4:33 am

We bought brand new the mil t/s module (black box w/fins), a new harness from Joe Cook, and the mil turn lever used in the Humvee. Figured all new-what could go wrong? The t/s harness is 8 wire from the lever with 3 going into the t/s module. C=ground wire which we connected. We added a wire 460/461 from peg J on the light switch to connect to the t/s harness. For hours we tried to figure out why no blinks. Everthing pinned out correctly. Talking to Charles, he suspected correctly the new module was bad. We bought a NAPA signal stat #263-4, 24v flasher module which has 3 tabs - X, L, P. The tab arrangement is identical to a headlamp connector which we used to mount. From the 3-pin harness, we left C=open, X=A, L=B with just 2 simple connections the system worked perfectly. The flasher module was $24 at NAPA.

52m37Hal · Post by **52m37Hal** » Sun Mar 30, 2008 6:45 am

Again, thanx!

Who makes an electronic flasher unit that will work?

MSeriesRebuild · Post by **MSeriesRebuild** » Sun Mar 30, 2008 8:57 am

52m37Hal wrote:Again, thanx!

Who makes an electronic flasher unit that will work?

Signal-stat #263-4, it's available at NAPA

To answer your question concerning the ground lead, (wire "C") simply connect it to a good common ground, the military switch does not establish a ground through the switch mount on the steering column. Wire "C" is a must when using the military switch.

52m37Hal · Post by **52m37Hal** » Sun Mar 30, 2008 5:57 pm

OK
I just thought the signal sta was the mechanical type (probably because I put a signal stat turn signal unit on my 48 CJ2A and that was 40 years ago!!

T/S Module?

T/S Module?

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