Wiring Question

Hello. I am new to the forum, and I have a problem.

I just picked up a 81 or 82 (not 100% sure which) Seca 750 for next to nothing. I have been going over some of the obvious issues and also charged the battery

Now to my problem
I am blowing the 30A Main fuse. The bike worked before I ch

In the side panel by the battery, there is a round item I assume is the Starter relay. above that is a wire harness. Out of that wire harness is a little wire that is white with a red stripe that was hooked to the battery. Problem is I can not remember if it was hooked to the POS or NEG. I have been looking in my Haynes book but can not figure it out. I will take pictures in the morning if no one knows what this wire is. I am wondering if that wire is hooked up wrong, and blowing fuses.

Thanks for the help
Joe

 

Generally speaking red with white stripe is positive. Black always ground. Dont have that diagram, but you should be sure you put it back where it came from. You should take an ohm meter and find out why your blowing fuses.

 

that white wire with the red stripe is the electrolite level sensor wire. goes in the battery. there should be a shaft going into one of the vent holes for the battery it connects to that. I dont have mine plugged in and I dont blow any fuses

And since you have that little white and red wire it makes it a 82

 

My battery does not have the sensor. I will leave it unhooked and try again. The person before me did a hack job on the fuse panel, so I have to fix that.

 

Problem solved. The hack job on the fuse panel was the problem. Two wire touching. I want to do the Fuse mod, does anyone know where to get the block in the write up? The local parts stores here do not have anything like the one in the write up.

 

Here they are:

Weather-proof Fuseboxes, Fuseholders, and Fuses:


COMMENTS: your stock fusebox was marginal, at best, and that was 20+ years ago. Replacing it with a modern style fuse panel or in-line fuse holders such as the styles listed below will prevent frustrating, expensive, and potentially dangerous electrical system problems for years to come.

The following models used a fusebox utilizing four "glass tube" AGC fuses with one 20A main fuse, and three 10A fuses for the ignition, turn signal, and headlight circuits: all XJ550 models, all XJ650 models, 1983 XJ750 Maxim and XJ750 Midnight Maxim models, and the main fusebox on XJ1100 models.

These models used a fusebox utilizing four "glass tube" AGC fuses that contained one 30A main fuse, and three 10A fuses for the ignition, turn signal, and headlight circuits: 1982 XJ750 Maxim model, all XJ750 Seca models, and the XJ900RK.

In addition, the following models used a separate single "glass tube" 5A AGC fuse, within its own small in-line holder, for the computerized gauge cluster: all XJ650 Turbo models, 1982 XJ750 Maxim, and all XJ750 Seca models.

XJ700 models used two separate fuse panels: one that contained the four seondary circuits, including two 10A fuses, and two 15A fuses, which is located within the instrument warning lights panel; and the 30A main circuit fuse panel was located under the seat. These bikes used the later push-in style ATC fuses in the dash fuse panel from the factory; the 30A main circuit fuses were still the older "glass tube" AGC style fuses.

XJ1100 models also used two separate fuse panels: one that contained the four seondary circuits, including one 20A fuse, and three 10A fuses, and which is located behind the right side panel; the 30A main circuit fuse panel was located under the seat.

FITMENT: the stock Yamaha fusebox is very flat...less than an inch tall. These aftermarket fuseblocks are quite a bit taller, and therefore may present some challenges and the need for some creative engineering to place them properly. We offer the following tips:

XJ550 models (all): the stock fusebox lays on top of the "tool kit caddy", and the forward "arms" of this caddy hold both the TCI (on the right side) and the fusebox (on the left side). These aftermarket fuseboxes will not fit in the same place as the stock fusebox, as the increased height will cause interference with the bottom of the seat pan. The best fit can be obtained by carefully cutting away a portion of the left tool caddy "arm", so that the replacement fusebox can be attached to the top of the air filter housing. Careful positioning of the fusebox will allow you to remove a minimal amount of the tool caddy arm material, thus retaining the structural strength of that arm. The replacement fusebox should them be retaining to the top of the air filter box via two self-tapping screws, or proper sized bolts and nuts.

XJ650 all models (except Turbo) and all XJ750 models: the stock fusebox lays on top of the air cleaner box lid. The replacement fuseblock can go in the same area, but some care must be taken as to positioning to make sure that the bottom of the seat pan does not contact the top of clear cover of the fuseblock. You will have to slightly reposition the fuseblock from the original moutning holes to get everything to line up properly.

XJ650 Turbo models: not yet verified.

XJ700 models: these bikes already use the push-in type fuses in a fusepanel located under the dash warning lights by the gauge cluster. Therefore these replacement 6-circuit fuseboxes are not needed on these bikes. However, the main 30-amp glass fuses and holder could benefit from the addition of the ATC in-line fuse holders.

XJ900 models: not yet verified.

XJ1100 models: not yet verified.






q) Replacement FUSEBOX, enclosed, weatherproof 6-circuit ATC (mini push-in blade style) fusebox....the style that everyone recommends using. Includes 6 ATC standard fuses, 2 x 20A or 2 x 30A (depending on your model), and 4 x 10A. Two more circuits than a stock fusebox allows you to add extra circuits for heated grips, cigarette lighter, headlight relays, etc. Size: 4" long x 1-1/8" wide (not including spade terminals) x 1-1/2" tall (including the clear, see-through cover). Note that this is a "side-terminal" design...the male wire terminal spades point outwards (away) from the sides of the fusebox.


HCP378BC Replacement FUSEBOX, 6-circuit design, comes with a full set of standard style ATC push-in style fuses (4 x 10A, and 2 x 20A), for all XJ550, all XJ650, 1983 XJ750 Maxim and XJ750 Midnight Maxim, and XJ1100 models.
$ 13.00

HCP378LF Replacement FUSEBOX, 6-circuit with a full set of glow-when-blown indicator style ATC push-in style fuses (4 x 10A, and 2 x 20A), XJ550, all XJ650, 1983 XJ750 Maxim and XJ750 Midnight Maxim, and XJ1100 models.
$ 16.00


HCP7153BC Replacement FUSEBOX, 6-circuit design, comes with a full set of standard style ATC push-in style fuses (4 x 10A, and 2 x 30A), for all XJ750 Seca, 1982 XJ750 Maxim, and XJ900RK models.
$ 13.00

HCP7153LF Replacement FUSEBOX, 6-circuit with a full set of glow-when-blown indicator style ATC push-in style fuses (4 x 10A, and 2 x 30A), for all XJ750 Seca, 1982 XJ750 Maxim, and XJ900RK models.
$ 16.00


nnn) Circuit ID Decal for the above 6-circuit HCP378BC fusebox. Printed on a clear adhesive backed long-life decal material, this decal specifies (in white print) the circuit "name" (MAIN, HEAD, TURN, IGN.), the fuse amp rating of each circuit, and the wire lead color code (RED, R/Y, BRN, R/W) so you can have the same circuit ID info on your replacement fusebox as on your original. Applies to the outside of the HCP378BC clear fusebox cover. The two empty circuit positions are titled "SPARE".

HCP393 Replacement HCP378xx fusebox 6-circuit I.D. Decal, with 20A main fuse labelling, for all XJ550, all XJ650, 1983 XJ750 Maxim and XJ750 Midnight Maxim, and XJ1100 models.
$ 4.00

HCP7152 Replacement HCP7153xx fusebox 6-circuit I.D. Decal, with 30A main fuse labeling, for all XJ750 Seca, 1982 XJ750 Maxim, and XJ900RK models.
$ 4.00


u7) Bottom Gasket for the above HCP378xx or HCP7153xx series 6-circuit fuseboxes. The fusebox has an "open" bottom, which would allow moisture and, eventually, corrosion to get into this otherwise sealed fuseblock. This die cut 1/16" rubber gasket has pre-punched mounting holes.

HCP382 Replacement 6-circuit fusebox Bottom Gasket:
$ 3.50




r) Replacement FUSEBOX, enclosed, weatherproof 8-circuit ATC (mini push-in blade style) fusebox. Same as the HCP378 fusebox above, but with two extra slots for a total of 8 circuits, in case you need to add even more circuits. Includes a total of eight ATC push-in style fuses, 2 x 20A and 6 x 10A.

Size: 4-1/2" long x 1-1/8" wide (not including the wire terminal spades) x 1-5/8" tall (including the clear cover). Note that this is a "bottom-terminal" design...the male spades point down towards the base of the fusebox, rayjer than out the sides. THIS FEATURE CAN MAKE THE INSTALLATION OF THIS FUSEBOX TRICKY ON THESE BIKES, and the additional height of this box can cause interference problems between the fusebox cover and the bottom of the seat pan on some models.

HCP379BC Replacement FUSEBOX, 8-circuit with a full set of standard style ATC push-in style fuses (6 x 10A, and 2 x 20A).
$ 15.00

HCP379LF Replacement FUSEBOX, 8-circuit with a full set of "glow-when-blown" indicator style ATC push-in style fuses (6 x 10A, and 2 x 20A).
$ 18.00